TY  - JOUR
AU  - Atanasovska, Ivana
AU  - Momčilović, Dejan
AU  - Lazović, Tatjana
AU  - Marinković, Aleksandar
AU  - Soldat, Nataša
PY  - 2023
UR  - http://rims.institutims.rs/handle/123456789/538
AB  - During the last few decades, the requirements for modern machine elements in terms of size
reduction, increasing the energy efficiency, and a higher load capacity of standard and non-standard
gears have been very prevalent issues. Within these demands, the main goals are the optimization
of the gears’ tooth profiles, as well as the investigation of new tooth profile designs. The presented
design idea is based on the optimal solutions inspired by nature. Special attention is paid to the new
design of the tooth root zones of spur gears in order to decrease the stress concentration values and
increase the tooth root fatigue resistance. The finite element method is used for stress and strain
state calculations, and the particular gear pair is modeled and optimized for these purposes. For
tooth root strength analysis, the estimations are based on the theory of critical distances and the
stress gradients obtained through finite element analysis. The obtained stress gradients have shown
important improvements in the stress distribution in the transition zone optimized by biomimetics.
An analysis of the material variation influence is also performed. Based on the investigations of a
particular gear pair, a significant stress reduction of about 7% for steel gears and about 10.3% for cast iron gears is obtained for tooth roots optimized by bio-inspired design.
T2  - Biomimetics
T1  - Biomimetics Design of Tooth Root Zone at Cylindrical Gears Profile
IS  - 3
VL  - 8
DO  - 10.3390/biomimetics8030308
ER  - 

@article{
author = "Atanasovska, Ivana and Momčilović, Dejan and Lazović, Tatjana and Marinković, Aleksandar and Soldat, Nataša",
year = "2023",
abstract = "During the last few decades, the requirements for modern machine elements in terms of size
reduction, increasing the energy efficiency, and a higher load capacity of standard and non-standard
gears have been very prevalent issues. Within these demands, the main goals are the optimization
of the gears’ tooth profiles, as well as the investigation of new tooth profile designs. The presented
design idea is based on the optimal solutions inspired by nature. Special attention is paid to the new
design of the tooth root zones of spur gears in order to decrease the stress concentration values and
increase the tooth root fatigue resistance. The finite element method is used for stress and strain
state calculations, and the particular gear pair is modeled and optimized for these purposes. For
tooth root strength analysis, the estimations are based on the theory of critical distances and the
stress gradients obtained through finite element analysis. The obtained stress gradients have shown
important improvements in the stress distribution in the transition zone optimized by biomimetics.
An analysis of the material variation influence is also performed. Based on the investigations of a
particular gear pair, a significant stress reduction of about 7% for steel gears and about 10.3% for cast iron gears is obtained for tooth roots optimized by bio-inspired design.",
journal = "Biomimetics",
title = "Biomimetics Design of Tooth Root Zone at Cylindrical Gears Profile",
number = "3",
volume = "8",
doi = "10.3390/biomimetics8030308"
}

Atanasovska, I., Momčilović, D., Lazović, T., Marinković, A.,& Soldat, N.. (2023). Biomimetics Design of Tooth Root Zone at Cylindrical Gears Profile. in Biomimetics, 8(3).
https://doi.org/10.3390/biomimetics8030308

Atanasovska I, Momčilović D, Lazović T, Marinković A, Soldat N. Biomimetics Design of Tooth Root Zone at Cylindrical Gears Profile. in Biomimetics. 2023;8(3).
doi:10.3390/biomimetics8030308 .

Atanasovska, Ivana, Momčilović, Dejan, Lazović, Tatjana, Marinković, Aleksandar, Soldat, Nataša, "Biomimetics Design of Tooth Root Zone at Cylindrical Gears Profile" in Biomimetics, 8, no. 3 (2023),
https://doi.org/10.3390/biomimetics8030308 . .

TY  - CONF
AU  - Milić, Milica
AU  - Svorcan, Jelena
AU  - Zorić, Nemanja
AU  - Atanasovska, Ivana
AU  - Momčilović, Dejan
PY  - 2023
UR  - http://rims.institutims.rs/handle/123456789/537
AB  - Composite materials have been extensively employed in the aviation industry in recent years. The application of new materials enables significant weight savings with improved mechanical characteristics. This is also very important in the field of development of unmanned aerial vehicles (UAV). In the design phases, it is necessary to perceive all the aspects that are important for the structure and consider different load cases. The relationship between weight and strength proved to be important. This means that detailed strength analyses of each structural part are indispensable. In particular, primary load-bearing structures must sustain all types of loads without fail. Failure of the structure can affect the motion of the UAV during the mission or lead to a crash and significant losses. This paper presents the research performed on the failure analysis of a composite beam of a novel UAV. During the testing phase, under an unpredictable load condition followed by a crash landing, failure of the structure occurred on a beam element. The study was performed to determine the cause of the failure of certain layers of the composite laminate, because the previous calculation showed that it met the criteria for which it was dimensioned. Based on the telemetry data and the impact load that was registered, a complementary numerical and experimental analyses were performed to determine what happened and why. Composite test specimens were extracted from the beam and subjected to standard tensile tests, in order to determine the actual mechanical characteristics of the layered material. The paper presents in detail the comparison of the results as well as the methodology used in this research.
C3  - Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science
T1  - Mathematical modeling and experimental investigation of a composite beam failure - Case study
VL  - 0
DO  - 10.1177/09544062231179078
ER  - 

@conference{
author = "Milić, Milica and Svorcan, Jelena and Zorić, Nemanja and Atanasovska, Ivana and Momčilović, Dejan",
year = "2023",
abstract = "Composite materials have been extensively employed in the aviation industry in recent years. The application of new materials enables significant weight savings with improved mechanical characteristics. This is also very important in the field of development of unmanned aerial vehicles (UAV). In the design phases, it is necessary to perceive all the aspects that are important for the structure and consider different load cases. The relationship between weight and strength proved to be important. This means that detailed strength analyses of each structural part are indispensable. In particular, primary load-bearing structures must sustain all types of loads without fail. Failure of the structure can affect the motion of the UAV during the mission or lead to a crash and significant losses. This paper presents the research performed on the failure analysis of a composite beam of a novel UAV. During the testing phase, under an unpredictable load condition followed by a crash landing, failure of the structure occurred on a beam element. The study was performed to determine the cause of the failure of certain layers of the composite laminate, because the previous calculation showed that it met the criteria for which it was dimensioned. Based on the telemetry data and the impact load that was registered, a complementary numerical and experimental analyses were performed to determine what happened and why. Composite test specimens were extracted from the beam and subjected to standard tensile tests, in order to determine the actual mechanical characteristics of the layered material. The paper presents in detail the comparison of the results as well as the methodology used in this research.",
journal = "Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science",
title = "Mathematical modeling and experimental investigation of a composite beam failure - Case study",
volume = "0",
doi = "10.1177/09544062231179078"
}

Milić, M., Svorcan, J., Zorić, N., Atanasovska, I.,& Momčilović, D.. (2023). Mathematical modeling and experimental investigation of a composite beam failure - Case study. in Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science, 0.
https://doi.org/10.1177/09544062231179078

Milić M, Svorcan J, Zorić N, Atanasovska I, Momčilović D. Mathematical modeling and experimental investigation of a composite beam failure - Case study. in Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science. 2023;0.
doi:10.1177/09544062231179078 .

Milić, Milica, Svorcan, Jelena, Zorić, Nemanja, Atanasovska, Ivana, Momčilović, Dejan, "Mathematical modeling and experimental investigation of a composite beam failure - Case study" in Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science, 0 (2023),
https://doi.org/10.1177/09544062231179078 . .

TY  - JOUR
AU  - Momčilović, Dejan
AU  - Atanasovska, Ivana
AU  - Vulović, Snežana
AU  - Pavlović, Ana
PY  - 2023
UR  - http://rims.institutims.rs/handle/123456789/461
AB  - The repair of structural elements for the prestressing of reinforced concrete is necessary
when existing prestressing wires are damaged or after a certain period of time. The objective of this
paper is to describe the methodology for the life assessment of corroded prestressing wires, sampled
from prestressed concrete elements after a few decades of use. The aim of the presented research was
to determine the real properties of corroded wire in terms of the evaluation of remaining load capacity
using the Theory of Critical Distances (TCD). The methodology also includes spatial 3D characterization
of corroded surfaces, determination of mechanical properties, and Finite Element Analysis (FEA)
of a model of wire with corrosion pits. The final goal of the presented methodology is to enable more
efficient evaluation of repair range and options for the elements of mechanical prestressing systems
within various structures. The results and conclusions indicate that the developed methodology,
based on the interdisciplinary approach and implementation of state-of-the-art methods, has a high
applicability potential for both static and fatigue fracture prediction in the case of prestressed wires.
The proposed method has a huge potential for simple and fast prediction of the life assessment of
engineering structures, particularly for damaged elements with arbitrary geometry features
PB  - MDPI
T2  - Metals
T1  - Life Assessment of Corroded Wire for Prestressing
IS  - 2
VL  - 13
DO  - 10.3390/met13020387
ER  - 

@article{
author = "Momčilović, Dejan and Atanasovska, Ivana and Vulović, Snežana and Pavlović, Ana",
year = "2023",
abstract = "The repair of structural elements for the prestressing of reinforced concrete is necessary
when existing prestressing wires are damaged or after a certain period of time. The objective of this
paper is to describe the methodology for the life assessment of corroded prestressing wires, sampled
from prestressed concrete elements after a few decades of use. The aim of the presented research was
to determine the real properties of corroded wire in terms of the evaluation of remaining load capacity
using the Theory of Critical Distances (TCD). The methodology also includes spatial 3D characterization
of corroded surfaces, determination of mechanical properties, and Finite Element Analysis (FEA)
of a model of wire with corrosion pits. The final goal of the presented methodology is to enable more
efficient evaluation of repair range and options for the elements of mechanical prestressing systems
within various structures. The results and conclusions indicate that the developed methodology,
based on the interdisciplinary approach and implementation of state-of-the-art methods, has a high
applicability potential for both static and fatigue fracture prediction in the case of prestressed wires.
The proposed method has a huge potential for simple and fast prediction of the life assessment of
engineering structures, particularly for damaged elements with arbitrary geometry features",
publisher = "MDPI",
journal = "Metals",
title = "Life Assessment of Corroded Wire for Prestressing",
number = "2",
volume = "13",
doi = "10.3390/met13020387"
}

Momčilović, D., Atanasovska, I., Vulović, S.,& Pavlović, A.. (2023). Life Assessment of Corroded Wire for Prestressing. in Metals
MDPI., 13(2).
https://doi.org/10.3390/met13020387

Momčilović D, Atanasovska I, Vulović S, Pavlović A. Life Assessment of Corroded Wire for Prestressing. in Metals. 2023;13(2).
doi:10.3390/met13020387 .

Momčilović, Dejan, Atanasovska, Ivana, Vulović, Snežana, Pavlović, Ana, "Life Assessment of Corroded Wire for Prestressing" in Metals, 13, no. 2 (2023),
https://doi.org/10.3390/met13020387 . .

TY  - CONF
AU  - Milić, Milica
AU  - Atanasovska, Ivana
AU  - Ristić, Ognjen
AU  - Momčilović, Dejan
PY  - 2022
UR  - http://rims.institutims.rs/handle/123456789/481
AB  - The high level of worthiness of unmanned aerial vehicles (UAV), particularly in everyday life, is something that will be common thing in close future. The design solutions for UAV us subject of constant innovation, focused on the improving structure performances and weight reducing. The use of new materials. like various composites, is necessary during this process to fulfill such demanding structural design requirements. Despite the fact that such kind of composite made UAV structures are subjected to the detailed calculation procedures and experimental verifications in the design phase, the fracture and failure can occur during testing in real operation conditions. The redesign procedure is required in order to overcome the noted issues.
This paper describes failure analysis, as well as structural redesign procedure for a beam element of an unconventional UAV. The fracture analysis is based on the numerical calculations of the deformation and stress state of the element, as well as experimental investigation of material characteristics. The developed redesign solution contains modifications in material of the element, as well as the changes in the structure design of the failure zone. The Finite Element Analysis is performed and discussed for both of the element structures: original design and redesign based on the fracture analysis. The conclusions obtained by the comparison of these Finite Element Analyses show the significant structure improvements in the stress concentration zone, achieved by the proposed redesign.
PB  - University of Belgrade - Faculty of Mechanical Engineering, Belgrade, Serbia
C3  - 1st International Conference on Mathematical Modelling in Mechanics and Engineering Mathematical Institute SANU
T1  - Failure analysis of beam of unmanned aerial vehicle
SP  - 156
UR  - https://hdl.handle.net/21.15107/rcub_rims_481
ER  - 

@conference{
author = "Milić, Milica and Atanasovska, Ivana and Ristić, Ognjen and Momčilović, Dejan",
year = "2022",
abstract = "The high level of worthiness of unmanned aerial vehicles (UAV), particularly in everyday life, is something that will be common thing in close future. The design solutions for UAV us subject of constant innovation, focused on the improving structure performances and weight reducing. The use of new materials. like various composites, is necessary during this process to fulfill such demanding structural design requirements. Despite the fact that such kind of composite made UAV structures are subjected to the detailed calculation procedures and experimental verifications in the design phase, the fracture and failure can occur during testing in real operation conditions. The redesign procedure is required in order to overcome the noted issues.
This paper describes failure analysis, as well as structural redesign procedure for a beam element of an unconventional UAV. The fracture analysis is based on the numerical calculations of the deformation and stress state of the element, as well as experimental investigation of material characteristics. The developed redesign solution contains modifications in material of the element, as well as the changes in the structure design of the failure zone. The Finite Element Analysis is performed and discussed for both of the element structures: original design and redesign based on the fracture analysis. The conclusions obtained by the comparison of these Finite Element Analyses show the significant structure improvements in the stress concentration zone, achieved by the proposed redesign.",
publisher = "University of Belgrade - Faculty of Mechanical Engineering, Belgrade, Serbia",
journal = "1st International Conference on Mathematical Modelling in Mechanics and Engineering Mathematical Institute SANU",
title = "Failure analysis of beam of unmanned aerial vehicle",
pages = "156",
url = "https://hdl.handle.net/21.15107/rcub_rims_481"
}

Milić, M., Atanasovska, I., Ristić, O.,& Momčilović, D.. (2022). Failure analysis of beam of unmanned aerial vehicle. in 1st International Conference on Mathematical Modelling in Mechanics and Engineering Mathematical Institute SANU
University of Belgrade - Faculty of Mechanical Engineering, Belgrade, Serbia., 156.
https://hdl.handle.net/21.15107/rcub_rims_481

Milić M, Atanasovska I, Ristić O, Momčilović D. Failure analysis of beam of unmanned aerial vehicle. in 1st International Conference on Mathematical Modelling in Mechanics and Engineering Mathematical Institute SANU. 2022;:156.
https://hdl.handle.net/21.15107/rcub_rims_481 .

Milić, Milica, Atanasovska, Ivana, Ristić, Ognjen, Momčilović, Dejan, "Failure analysis of beam of unmanned aerial vehicle" in 1st International Conference on Mathematical Modelling in Mechanics and Engineering Mathematical Institute SANU (2022):156,
https://hdl.handle.net/21.15107/rcub_rims_481 .

TY  - CONF
AU  - Atanasovska, Ivana
AU  - Momčilović, Dejan
PY  - 2022
UR  - http://rims.institutims.rs/handle/123456789/458
AB  - The contact fatigue is a localized phenomenon that occurs in highly
stressed local zone of the material under the loaded contact region and as such is
highly nonlinear problem. This phenomenon exists in almost all real mechanical
systems with contact strains coupled with other sources of nonlinear behaviour.
The improvements of existing procedures and methods for standard calculation
of contact fatigue have a potential to give significant contribution to increase
accuracy of calculation of life assessment, reliability and efficiency of complex
mechanical systems. This paper gives the basic explanation of the Theory of
critical distances and its application on direct estimation of fatigue crack
initiation in contact zones. Analysis of contact fatigue when the contact zones
are subjected to additional nonlinearities such as geometry manufacturing
deviations, geometry microscale-damages or nonlinear material characteristics
are presented in detail. Few different real multi-nonlinear problems are used for
analysis performing. The benefits of presented approach are discussed by detail
analysis of the obtained results, and could be based on the increasing accuracy
of contact fatigue prediction considering all existing nonlinearities in loaded
contact zones of complex mechanical systems.
C3  - 2nd Conference on Nonlinearity, Belgrade
T1  - Analysis of contact fatigue coupled with geometry and material nonlinearities by Theory of critical distances
EP  - 47
SP  - 27
UR  - https://hdl.handle.net/21.15107/rcub_rims_458
ER  - 

@conference{
author = "Atanasovska, Ivana and Momčilović, Dejan",
year = "2022",
abstract = "The contact fatigue is a localized phenomenon that occurs in highly
stressed local zone of the material under the loaded contact region and as such is
highly nonlinear problem. This phenomenon exists in almost all real mechanical
systems with contact strains coupled with other sources of nonlinear behaviour.
The improvements of existing procedures and methods for standard calculation
of contact fatigue have a potential to give significant contribution to increase
accuracy of calculation of life assessment, reliability and efficiency of complex
mechanical systems. This paper gives the basic explanation of the Theory of
critical distances and its application on direct estimation of fatigue crack
initiation in contact zones. Analysis of contact fatigue when the contact zones
are subjected to additional nonlinearities such as geometry manufacturing
deviations, geometry microscale-damages or nonlinear material characteristics
are presented in detail. Few different real multi-nonlinear problems are used for
analysis performing. The benefits of presented approach are discussed by detail
analysis of the obtained results, and could be based on the increasing accuracy
of contact fatigue prediction considering all existing nonlinearities in loaded
contact zones of complex mechanical systems.",
journal = "2nd Conference on Nonlinearity, Belgrade",
title = "Analysis of contact fatigue coupled with geometry and material nonlinearities by Theory of critical distances",
pages = "47-27",
url = "https://hdl.handle.net/21.15107/rcub_rims_458"
}

Atanasovska, I.,& Momčilović, D.. (2022). Analysis of contact fatigue coupled with geometry and material nonlinearities by Theory of critical distances. in 2nd Conference on Nonlinearity, Belgrade, 27-47.
https://hdl.handle.net/21.15107/rcub_rims_458

Atanasovska I, Momčilović D. Analysis of contact fatigue coupled with geometry and material nonlinearities by Theory of critical distances. in 2nd Conference on Nonlinearity, Belgrade. 2022;:27-47.
https://hdl.handle.net/21.15107/rcub_rims_458 .

Atanasovska, Ivana, Momčilović, Dejan, "Analysis of contact fatigue coupled with geometry and material nonlinearities by Theory of critical distances" in 2nd Conference on Nonlinearity, Belgrade (2022):27-47,
https://hdl.handle.net/21.15107/rcub_rims_458 .

TY  - CONF
AU  - Atanasovska, Ivana
AU  - Momčilović, Dejan
PY  - 2021
UR  - http://rims.institutims.rs/handle/123456789/478
AB  - Hertz contact and the resulting stress-strain state arising from the contact between two elastic solids have practical application in hardness testing, wear and impact damage of engineering ceramics, the design of dental prostheses, gear teeth, ball and roller bearings and many other engineering applications. Although the common concepts for studying these problems implies that the analysis is perform taking into account that elastic solids are imperfection free, the real problems, as well as various failure analysis, underline significance in taking into account those imperfections, [1]. Imperfections in metallic materials can be non-metallic inclusions, carbides, pores and other microstructural defects, [1, 2]. This paper describes model of two cylinders in contact made by metallic material with carbides. The Finite Element Analysis (FEA) is performed in order to discuss the influence of position, orientation and dimension of carbides on Hertz stresses for two cylinders in contact. Fig.1a shows the FEA model developed for calculation the Hertz stress state for two cylinders, and Fig.2 shows the position and dimension of carbides for two of the series of modelled cases.
C3  - 8th International Congress of Serbian Society of Mechanics, Kragujevac, Serbia
T1  - Analysis of Hertz contact stresses for metallic material with carbides
EP  - 217
SP  - 216
UR  - https://hdl.handle.net/21.15107/rcub_rims_478
ER  - 

@conference{
author = "Atanasovska, Ivana and Momčilović, Dejan",
year = "2021",
abstract = "Hertz contact and the resulting stress-strain state arising from the contact between two elastic solids have practical application in hardness testing, wear and impact damage of engineering ceramics, the design of dental prostheses, gear teeth, ball and roller bearings and many other engineering applications. Although the common concepts for studying these problems implies that the analysis is perform taking into account that elastic solids are imperfection free, the real problems, as well as various failure analysis, underline significance in taking into account those imperfections, [1]. Imperfections in metallic materials can be non-metallic inclusions, carbides, pores and other microstructural defects, [1, 2]. This paper describes model of two cylinders in contact made by metallic material with carbides. The Finite Element Analysis (FEA) is performed in order to discuss the influence of position, orientation and dimension of carbides on Hertz stresses for two cylinders in contact. Fig.1a shows the FEA model developed for calculation the Hertz stress state for two cylinders, and Fig.2 shows the position and dimension of carbides for two of the series of modelled cases.",
journal = "8th International Congress of Serbian Society of Mechanics, Kragujevac, Serbia",
title = "Analysis of Hertz contact stresses for metallic material with carbides",
pages = "217-216",
url = "https://hdl.handle.net/21.15107/rcub_rims_478"
}

Atanasovska, I.,& Momčilović, D.. (2021). Analysis of Hertz contact stresses for metallic material with carbides. in 8th International Congress of Serbian Society of Mechanics, Kragujevac, Serbia, 216-217.
https://hdl.handle.net/21.15107/rcub_rims_478

Atanasovska I, Momčilović D. Analysis of Hertz contact stresses for metallic material with carbides. in 8th International Congress of Serbian Society of Mechanics, Kragujevac, Serbia. 2021;:216-217.
https://hdl.handle.net/21.15107/rcub_rims_478 .

Atanasovska, Ivana, Momčilović, Dejan, "Analysis of Hertz contact stresses for metallic material with carbides" in 8th International Congress of Serbian Society of Mechanics, Kragujevac, Serbia (2021):216-217,
https://hdl.handle.net/21.15107/rcub_rims_478 .

TY  - CONF
AU  - Atanasovska, Ivana
AU  - Momčilović, Dejan
PY  - 2021
UR  - http://rims.institutims.rs/handle/123456789/459
AB  - The presented research primarily considers with the geometric solutions that Nature has optimized. In the study presented in this paper, the nature inspired transition shapes are used in the research of innovative design and geometric optimization of transition zones of the high-loaded shafts.
C3  - 8th International Congress of Serbian Society of Mechanics, Kragujevac, Serbia
T1  - Geometric optimization of shaft transition zone based on stress-strain analysis of nature inspired design
EP  - 187
SP  - 186
UR  - https://hdl.handle.net/21.15107/rcub_rims_459
ER  - 

@conference{
author = "Atanasovska, Ivana and Momčilović, Dejan",
year = "2021",
abstract = "The presented research primarily considers with the geometric solutions that Nature has optimized. In the study presented in this paper, the nature inspired transition shapes are used in the research of innovative design and geometric optimization of transition zones of the high-loaded shafts.",
journal = "8th International Congress of Serbian Society of Mechanics, Kragujevac, Serbia",
title = "Geometric optimization of shaft transition zone based on stress-strain analysis of nature inspired design",
pages = "187-186",
url = "https://hdl.handle.net/21.15107/rcub_rims_459"
}

Atanasovska, I.,& Momčilović, D.. (2021). Geometric optimization of shaft transition zone based on stress-strain analysis of nature inspired design. in 8th International Congress of Serbian Society of Mechanics, Kragujevac, Serbia, 186-187.
https://hdl.handle.net/21.15107/rcub_rims_459

Atanasovska I, Momčilović D. Geometric optimization of shaft transition zone based on stress-strain analysis of nature inspired design. in 8th International Congress of Serbian Society of Mechanics, Kragujevac, Serbia. 2021;:186-187.
https://hdl.handle.net/21.15107/rcub_rims_459 .

Atanasovska, Ivana, Momčilović, Dejan, "Geometric optimization of shaft transition zone based on stress-strain analysis of nature inspired design" in 8th International Congress of Serbian Society of Mechanics, Kragujevac, Serbia (2021):186-187,
https://hdl.handle.net/21.15107/rcub_rims_459 .

TY  - JOUR
AU  - Atanasovska, Ivana
AU  - Momčilović, Dejan
PY  - 2021
UR  - http://rims.institutims.rs/handle/123456789/457
AB  - The basic definitions and a history of the development of biomimetics as a discipline that
considers nature-inspired design are presented in this paper. The discussion and the results of the
application of principles of nature-inspired design in machine elements design are given. The fact
that transition zones that Nature chose and designed on trees in many cases survived for more
than a hundred years, resisting on the various and variable external loads and other external
conditions, is considered. Presented case study used the nature-inspired transition shapes in the
research of innovative design and geometric optimization of transition zones of high-loaded
shafts. The comparative Finite Element Analysis is performed for a particular transition zone with
traditional engineering design, as well as with nature-inspired design. The conclusions about the
increase of load capacity that is obtained with innovative biomimetics design are discussed.
T2  - Journal of the Serbian Society for Computational Mechanics
T1  - Geometric optimization of transition zones based on biomimetics principles
EP  - 45
IS  - 2
SP  - 32
VL  - 15
DO  - 10.24874/jsscm.2021.15.02.04
ER  - 

@article{
author = "Atanasovska, Ivana and Momčilović, Dejan",
year = "2021",
abstract = "The basic definitions and a history of the development of biomimetics as a discipline that
considers nature-inspired design are presented in this paper. The discussion and the results of the
application of principles of nature-inspired design in machine elements design are given. The fact
that transition zones that Nature chose and designed on trees in many cases survived for more
than a hundred years, resisting on the various and variable external loads and other external
conditions, is considered. Presented case study used the nature-inspired transition shapes in the
research of innovative design and geometric optimization of transition zones of high-loaded
shafts. The comparative Finite Element Analysis is performed for a particular transition zone with
traditional engineering design, as well as with nature-inspired design. The conclusions about the
increase of load capacity that is obtained with innovative biomimetics design are discussed.",
journal = "Journal of the Serbian Society for Computational Mechanics",
title = "Geometric optimization of transition zones based on biomimetics principles",
pages = "45-32",
number = "2",
volume = "15",
doi = "10.24874/jsscm.2021.15.02.04"
}

Atanasovska, I.,& Momčilović, D.. (2021). Geometric optimization of transition zones based on biomimetics principles. in Journal of the Serbian Society for Computational Mechanics, 15(2), 32-45.
https://doi.org/10.24874/jsscm.2021.15.02.04

Atanasovska I, Momčilović D. Geometric optimization of transition zones based on biomimetics principles. in Journal of the Serbian Society for Computational Mechanics. 2021;15(2):32-45.
doi:10.24874/jsscm.2021.15.02.04 .

Atanasovska, Ivana, Momčilović, Dejan, "Geometric optimization of transition zones based on biomimetics principles" in Journal of the Serbian Society for Computational Mechanics, 15, no. 2 (2021):32-45,
https://doi.org/10.24874/jsscm.2021.15.02.04 . .

TY  - CONF
AU  - Atanasovska, Ivana
AU  - Mitrović, Radivoje
AU  - Soldat, Nataša
AU  - Momčilović, Dejan
PY  - 2020
UR  - http://rims.institutims.rs/handle/123456789/460
AB  - In the framework of Industry 4.0, new specific or improved methods for
monitoring and prediction of operational conditions of machine elements are required.
Ball bearings are among the elements with high impact on safety and reliability of
mechanical systems operation. Hence, the development of accurate methods for their
working conditions monitoring is one of the important tasks within this framework. In
this paper, the development of 3D Finite Element Model for deep groove ball bearings
with defects on ring races is described in detail and its place in the new monitoring
methods is discussed. Special attention is paid to the modeling of contact finite
elements and selection of FEA parameters for fast and secure convergence during
non-linear calculations. The stress analysis of contact zones with defects and influence
of variable defect dimensions are presented, also.
C3  - Proceedings of the 5th International Scientific Conference, ”Conference on Mechanical Engineering Technologies and Applications” COMETa2020, East Sarajevo
T1  - Finite element model for stress state analysis of deep groove ball bearings with defects
EP  - 292
SP  - 285
UR  - https://hdl.handle.net/21.15107/rcub_rims_460
ER  - 

@conference{
author = "Atanasovska, Ivana and Mitrović, Radivoje and Soldat, Nataša and Momčilović, Dejan",
year = "2020",
abstract = "In the framework of Industry 4.0, new specific or improved methods for
monitoring and prediction of operational conditions of machine elements are required.
Ball bearings are among the elements with high impact on safety and reliability of
mechanical systems operation. Hence, the development of accurate methods for their
working conditions monitoring is one of the important tasks within this framework. In
this paper, the development of 3D Finite Element Model for deep groove ball bearings
with defects on ring races is described in detail and its place in the new monitoring
methods is discussed. Special attention is paid to the modeling of contact finite
elements and selection of FEA parameters for fast and secure convergence during
non-linear calculations. The stress analysis of contact zones with defects and influence
of variable defect dimensions are presented, also.",
journal = "Proceedings of the 5th International Scientific Conference, ”Conference on Mechanical Engineering Technologies and Applications” COMETa2020, East Sarajevo",
title = "Finite element model for stress state analysis of deep groove ball bearings with defects",
pages = "292-285",
url = "https://hdl.handle.net/21.15107/rcub_rims_460"
}

Atanasovska, I., Mitrović, R., Soldat, N.,& Momčilović, D.. (2020). Finite element model for stress state analysis of deep groove ball bearings with defects. in Proceedings of the 5th International Scientific Conference, ”Conference on Mechanical Engineering Technologies and Applications” COMETa2020, East Sarajevo, 285-292.
https://hdl.handle.net/21.15107/rcub_rims_460

Atanasovska I, Mitrović R, Soldat N, Momčilović D. Finite element model for stress state analysis of deep groove ball bearings with defects. in Proceedings of the 5th International Scientific Conference, ”Conference on Mechanical Engineering Technologies and Applications” COMETa2020, East Sarajevo. 2020;:285-292.
https://hdl.handle.net/21.15107/rcub_rims_460 .

Atanasovska, Ivana, Mitrović, Radivoje, Soldat, Nataša, Momčilović, Dejan, "Finite element model for stress state analysis of deep groove ball bearings with defects" in Proceedings of the 5th International Scientific Conference, ”Conference on Mechanical Engineering Technologies and Applications” COMETa2020, East Sarajevo (2020):285-292,
https://hdl.handle.net/21.15107/rcub_rims_460 .

TY  - CONF
AU  - Atanasovska, Ivana
AU  - Momčilović, Dejan
PY  - 2020
UR  - http://rims.institutims.rs/handle/123456789/477
AB  - The safe towing of aircraft is an important part in aviation security. Failures during the towing and parking
related operations are not so rare due to bad working circumstance, human error, etc. Tow bars are simple
but very important elements, for towing aircrafts on airports all over the world. This paper describes
failure analysis of accident during towing of regional ATR 72 aircraft. During towing of ATR 72 aircraft
sudden fracture of shear pins caused that tow tractor goes into one and airplane ATR 72 into other
direction. As a result, the airplane crashed on the empty tanker truck and severely deformed nose in this
ground damage incident. Design of failed tow bar key elements and of susceptibility to corrosion was
discussed in this paper. Failure analysis unveil the several key elements that lead to fracture of shear pins: outdated design of tow
bar, improper maintenance and non-regular towing of aircraft. Combination of reduction of load capacity
of shear pins induced by corrosion and impulse overloading caused premature fracture of the shear pins.and damage of ATR 72 aircraft. As a result of presented analysis the remedy was initiative for detail
inspection of existing tow bars and redesign or purchasing the new ones. The results are presented.
C3  - 10th EASN Virtual International Conference on Innovation in Aviation & Space to the Satisfaction of the European Citizens
T1  - Failure analysis of ATR 72 tow bar–opportunity for re-design for inspection
EP  - 76
SP  - 75
UR  - https://hdl.handle.net/21.15107/rcub_rims_477
ER  - 

@conference{
author = "Atanasovska, Ivana and Momčilović, Dejan",
year = "2020",
abstract = "The safe towing of aircraft is an important part in aviation security. Failures during the towing and parking
related operations are not so rare due to bad working circumstance, human error, etc. Tow bars are simple
but very important elements, for towing aircrafts on airports all over the world. This paper describes
failure analysis of accident during towing of regional ATR 72 aircraft. During towing of ATR 72 aircraft
sudden fracture of shear pins caused that tow tractor goes into one and airplane ATR 72 into other
direction. As a result, the airplane crashed on the empty tanker truck and severely deformed nose in this
ground damage incident. Design of failed tow bar key elements and of susceptibility to corrosion was
discussed in this paper. Failure analysis unveil the several key elements that lead to fracture of shear pins: outdated design of tow
bar, improper maintenance and non-regular towing of aircraft. Combination of reduction of load capacity
of shear pins induced by corrosion and impulse overloading caused premature fracture of the shear pins.and damage of ATR 72 aircraft. As a result of presented analysis the remedy was initiative for detail
inspection of existing tow bars and redesign or purchasing the new ones. The results are presented.",
journal = "10th EASN Virtual International Conference on Innovation in Aviation & Space to the Satisfaction of the European Citizens",
title = "Failure analysis of ATR 72 tow bar–opportunity for re-design for inspection",
pages = "76-75",
url = "https://hdl.handle.net/21.15107/rcub_rims_477"
}

Atanasovska, I.,& Momčilović, D.. (2020). Failure analysis of ATR 72 tow bar–opportunity for re-design for inspection. in 10th EASN Virtual International Conference on Innovation in Aviation & Space to the Satisfaction of the European Citizens, 75-76.
https://hdl.handle.net/21.15107/rcub_rims_477

Atanasovska I, Momčilović D. Failure analysis of ATR 72 tow bar–opportunity for re-design for inspection. in 10th EASN Virtual International Conference on Innovation in Aviation & Space to the Satisfaction of the European Citizens. 2020;:75-76.
https://hdl.handle.net/21.15107/rcub_rims_477 .

Atanasovska, Ivana, Momčilović, Dejan, "Failure analysis of ATR 72 tow bar–opportunity for re-design for inspection" in 10th EASN Virtual International Conference on Innovation in Aviation & Space to the Satisfaction of the European Citizens (2020):75-76,
https://hdl.handle.net/21.15107/rcub_rims_477 .

TY  - CHAP
AU  - Atanasovska, Ivana
AU  - Momčilović, Dejan
AU  - Mitrović, Radivoje
AU  - Soldat, Nataša D.
AU  - Nešić, N.
PY  - 2020
UR  - http://rims.institutims.rs/handle/123456789/379
AB  - This paper contains elements of a comprehensive research devoted to the dynamic behavior of radial ball bearings in real working conditions. The general motivation for this topic comes from the requirements for high performance operation of bearings within complex mechanical systems, defined in many industrial branches during the last decades. The discussion of the fundamental postulates of the approach used for analyzing the vibration response of rolling ball bearings in order to select the optimal working conditions is given. The certain simplifications and reductions used for analyzing the radial ball bearings are explained. The developed procedure can be used for research of influence of different damages and variable operation conditions on the rolling bearings dynamics. The detail analyses of the dynamic behavior of rolling bearings are performed for particular types of radial ball bearings in two case studies: For the damaged outer raceway surface in accordance with real fatigue damage shapes and dimensions and, for variable working temperature. Obtained results are shown by comparative diagrams of vibration and phase plane portraits. Presented results could be a base for more widely research of nonlinear dynamics of radial ball bearings with different damages and for the application of phase plane analysis in order to choose the optimal operation conditions.
PB  - Springer
T2  - IUTAM Bookseries
T1  - Nonlinear Dynamics as a Tool in Selection of Working Conditions for Radial Ball Bearing
EP  - 58
SP  - 49
VL  - 37
DO  - 10.1007/978-3-030-23692-2_5
ER  - 

@inbook{
author = "Atanasovska, Ivana and Momčilović, Dejan and Mitrović, Radivoje and Soldat, Nataša D. and Nešić, N.",
year = "2020",
abstract = "This paper contains elements of a comprehensive research devoted to the dynamic behavior of radial ball bearings in real working conditions. The general motivation for this topic comes from the requirements for high performance operation of bearings within complex mechanical systems, defined in many industrial branches during the last decades. The discussion of the fundamental postulates of the approach used for analyzing the vibration response of rolling ball bearings in order to select the optimal working conditions is given. The certain simplifications and reductions used for analyzing the radial ball bearings are explained. The developed procedure can be used for research of influence of different damages and variable operation conditions on the rolling bearings dynamics. The detail analyses of the dynamic behavior of rolling bearings are performed for particular types of radial ball bearings in two case studies: For the damaged outer raceway surface in accordance with real fatigue damage shapes and dimensions and, for variable working temperature. Obtained results are shown by comparative diagrams of vibration and phase plane portraits. Presented results could be a base for more widely research of nonlinear dynamics of radial ball bearings with different damages and for the application of phase plane analysis in order to choose the optimal operation conditions.",
publisher = "Springer",
journal = "IUTAM Bookseries",
booktitle = "Nonlinear Dynamics as a Tool in Selection of Working Conditions for Radial Ball Bearing",
pages = "58-49",
volume = "37",
doi = "10.1007/978-3-030-23692-2_5"
}

Atanasovska, I., Momčilović, D., Mitrović, R., Soldat, N. D.,& Nešić, N.. (2020). Nonlinear Dynamics as a Tool in Selection of Working Conditions for Radial Ball Bearing. in IUTAM Bookseries
Springer., 37, 49-58.
https://doi.org/10.1007/978-3-030-23692-2_5

Atanasovska I, Momčilović D, Mitrović R, Soldat ND, Nešić N. Nonlinear Dynamics as a Tool in Selection of Working Conditions for Radial Ball Bearing. in IUTAM Bookseries. 2020;37:49-58.
doi:10.1007/978-3-030-23692-2_5 .

Atanasovska, Ivana, Momčilović, Dejan, Mitrović, Radivoje, Soldat, Nataša D., Nešić, N., "Nonlinear Dynamics as a Tool in Selection of Working Conditions for Radial Ball Bearing" in IUTAM Bookseries, 37 (2020):49-58,
https://doi.org/10.1007/978-3-030-23692-2_5 . .

TY  - CONF
AU  - Atanasovska, Ivana
AU  - Hedrih, K.R.
AU  - Momčilović, Dejan
PY  - 2020
UR  - http://rims.institutims.rs/handle/123456789/394
AB  - The main performance of involute gears operation leads to the appearance of nonlinear dynamic behavior and impact. In this chapter the influence of mild wear of the tooth flanks of gears without machine finishing and surface hardening on the vibro-impact behavior is considered. For this purpose, a new theoretical model for vibro-impact dynamics of spur gears with mild wear on tooth flanks is developed and described. The developed theoretical model is based on the main postulates of a model of the central centric collision of two fictive rolling disks with radii equal to the radii of kinematic diameters of the pinion and the wheel, as well as on a combined analytical/numerical approach used finite element analysis for the calculation of contact deformations, contact pressure, and wear on tooth flanks surfaces. A particular gear pair for earth moving machine is used for presenting the developed model. The conclusions about the influence of mild wear on the vibroimpact oscillations during running-in period are described.
PB  - Springer Nature
C3  - Nonlinear Dynamics of Structures, Systems and Devices - Proceedings of the 1st International Nonline
T1  - A Theoretical Model for Vibro-Impact Dynamics of Spur Gears with Tooth Flanks Wear
EP  - 136
SP  - 127
DO  - 10.1007/978-3-030-34713-0_13
ER  - 

@conference{
author = "Atanasovska, Ivana and Hedrih, K.R. and Momčilović, Dejan",
year = "2020",
abstract = "The main performance of involute gears operation leads to the appearance of nonlinear dynamic behavior and impact. In this chapter the influence of mild wear of the tooth flanks of gears without machine finishing and surface hardening on the vibro-impact behavior is considered. For this purpose, a new theoretical model for vibro-impact dynamics of spur gears with mild wear on tooth flanks is developed and described. The developed theoretical model is based on the main postulates of a model of the central centric collision of two fictive rolling disks with radii equal to the radii of kinematic diameters of the pinion and the wheel, as well as on a combined analytical/numerical approach used finite element analysis for the calculation of contact deformations, contact pressure, and wear on tooth flanks surfaces. A particular gear pair for earth moving machine is used for presenting the developed model. The conclusions about the influence of mild wear on the vibroimpact oscillations during running-in period are described.",
publisher = "Springer Nature",
journal = "Nonlinear Dynamics of Structures, Systems and Devices - Proceedings of the 1st International Nonline",
title = "A Theoretical Model for Vibro-Impact Dynamics of Spur Gears with Tooth Flanks Wear",
pages = "136-127",
doi = "10.1007/978-3-030-34713-0_13"
}

Atanasovska, I., Hedrih, K.R.,& Momčilović, D.. (2020). A Theoretical Model for Vibro-Impact Dynamics of Spur Gears with Tooth Flanks Wear. in Nonlinear Dynamics of Structures, Systems and Devices - Proceedings of the 1st International Nonline
Springer Nature., 127-136.
https://doi.org/10.1007/978-3-030-34713-0_13

Atanasovska I, Hedrih K, Momčilović D. A Theoretical Model for Vibro-Impact Dynamics of Spur Gears with Tooth Flanks Wear. in Nonlinear Dynamics of Structures, Systems and Devices - Proceedings of the 1st International Nonline. 2020;:127-136.
doi:10.1007/978-3-030-34713-0_13 .

Atanasovska, Ivana, Hedrih, K.R., Momčilović, Dejan, "A Theoretical Model for Vibro-Impact Dynamics of Spur Gears with Tooth Flanks Wear" in Nonlinear Dynamics of Structures, Systems and Devices - Proceedings of the 1st International Nonline (2020):127-136,
https://doi.org/10.1007/978-3-030-34713-0_13 . .

TY  - CONF
AU  - Momčilović, Dejan
AU  - Atanasovska, Ivana
AU  - Ristić, Ognjen
PY  - 2019
UR  - http://rims.institutims.rs/handle/123456789/484
AB  - Many new requirements in the field of testing of metals, emphasize traceability
and accuracy of test results as of the end goal. These requirements have hidden
context with emphasis on energy efficiency too., which is initiated by mass
productions and increasing market of end products based on steels for civil engineering
applications. The noted above move focus on improvements of existing
test methods. The key point in the verification of improvements is a statistical
analysis of test results. This paper describes one such analysis, based on results
obtained by application of new insert tool for testing of shear strength of welded
fabric for civil engineering. This paper presents an extensive series of experimental
results to verify the efficiency of the application of the new insert tool. The obtained
results justify applications of a new tool insert to reduce data scatter during testing
of welded fabric for civil engineering.
PB  - The Association of Metallurgical Engineers of Serbia, Belgrade, Serbia
C3  - Abstracts of Fourth Metallurgical & Materials Engineering Congress of South-East Europe (MME SEE 2019), Belgrade, Serbia
T1  - Statistical analysis of shear strength of welds in welded fabric for civil engineering with application of new tool design
SP  - 24
UR  - https://hdl.handle.net/21.15107/rcub_rims_484
ER  - 

@conference{
author = "Momčilović, Dejan and Atanasovska, Ivana and Ristić, Ognjen",
year = "2019",
abstract = "Many new requirements in the field of testing of metals, emphasize traceability
and accuracy of test results as of the end goal. These requirements have hidden
context with emphasis on energy efficiency too., which is initiated by mass
productions and increasing market of end products based on steels for civil engineering
applications. The noted above move focus on improvements of existing
test methods. The key point in the verification of improvements is a statistical
analysis of test results. This paper describes one such analysis, based on results
obtained by application of new insert tool for testing of shear strength of welded
fabric for civil engineering. This paper presents an extensive series of experimental
results to verify the efficiency of the application of the new insert tool. The obtained
results justify applications of a new tool insert to reduce data scatter during testing
of welded fabric for civil engineering.",
publisher = "The Association of Metallurgical Engineers of Serbia, Belgrade, Serbia",
journal = "Abstracts of Fourth Metallurgical & Materials Engineering Congress of South-East Europe (MME SEE 2019), Belgrade, Serbia",
title = "Statistical analysis of shear strength of welds in welded fabric for civil engineering with application of new tool design",
pages = "24",
url = "https://hdl.handle.net/21.15107/rcub_rims_484"
}

Momčilović, D., Atanasovska, I.,& Ristić, O.. (2019). Statistical analysis of shear strength of welds in welded fabric for civil engineering with application of new tool design. in Abstracts of Fourth Metallurgical & Materials Engineering Congress of South-East Europe (MME SEE 2019), Belgrade, Serbia
The Association of Metallurgical Engineers of Serbia, Belgrade, Serbia., 24.
https://hdl.handle.net/21.15107/rcub_rims_484

Momčilović D, Atanasovska I, Ristić O. Statistical analysis of shear strength of welds in welded fabric for civil engineering with application of new tool design. in Abstracts of Fourth Metallurgical & Materials Engineering Congress of South-East Europe (MME SEE 2019), Belgrade, Serbia. 2019;:24.
https://hdl.handle.net/21.15107/rcub_rims_484 .

Momčilović, Dejan, Atanasovska, Ivana, Ristić, Ognjen, "Statistical analysis of shear strength of welds in welded fabric for civil engineering with application of new tool design" in Abstracts of Fourth Metallurgical & Materials Engineering Congress of South-East Europe (MME SEE 2019), Belgrade, Serbia (2019):24,
https://hdl.handle.net/21.15107/rcub_rims_484 .

TY  - PAT
AU  - Atanasovska, Ivana
AU  - Momčilović, Dejan
AU  - Timotijević, Dejan
AU  - Ristić, Ognjen
PY  - 2019
UR  - http://rims.institutims.rs/handle/123456789/482
T1  - Alatni uložak za sprečavanje rotacije poprečne žice pri ispitivanju zavarenih spojeva čeličnih spojeva mreža na smicanje
UR  - https://hdl.handle.net/21.15107/rcub_rims_482
ER  - 

@misc{
author = "Atanasovska, Ivana and Momčilović, Dejan and Timotijević, Dejan and Ristić, Ognjen",
year = "2019",
title = "Alatni uložak za sprečavanje rotacije poprečne žice pri ispitivanju zavarenih spojeva čeličnih spojeva mreža na smicanje",
url = "https://hdl.handle.net/21.15107/rcub_rims_482"
}

Atanasovska, I., Momčilović, D., Timotijević, D.,& Ristić, O.. (2019). Alatni uložak za sprečavanje rotacije poprečne žice pri ispitivanju zavarenih spojeva čeličnih spojeva mreža na smicanje. .
https://hdl.handle.net/21.15107/rcub_rims_482

Atanasovska I, Momčilović D, Timotijević D, Ristić O. Alatni uložak za sprečavanje rotacije poprečne žice pri ispitivanju zavarenih spojeva čeličnih spojeva mreža na smicanje. 2019;.
https://hdl.handle.net/21.15107/rcub_rims_482 .

Atanasovska, Ivana, Momčilović, Dejan, Timotijević, Dejan, Ristić, Ognjen, "Alatni uložak za sprečavanje rotacije poprečne žice pri ispitivanju zavarenih spojeva čeličnih spojeva mreža na smicanje" (2019),
https://hdl.handle.net/21.15107/rcub_rims_482 .

TY  - CONF
AU  - Atanasovska, Ivana
AU  - Momčilović, Dejan
PY  - 2019
UR  - http://rims.institutims.rs/handle/123456789/471
AB  - The concept of using ideas from nature as inspiration for innovation and technological development is in focus last decades, while the similar approach can be found in the ancient civilizations. In any kind of such progress it is important to remember the founders and pioneers and to understand their character and the circumstances that push them to go beyond existing knowledge.
C3  - Abstracts of 15th International conference Dynamical Systems - Theory and Applications
T1  - Great persons and results make biomimetics incredibly inspirational
UR  - https://hdl.handle.net/21.15107/rcub_rims_471
ER  - 

@conference{
author = "Atanasovska, Ivana and Momčilović, Dejan",
year = "2019",
abstract = "The concept of using ideas from nature as inspiration for innovation and technological development is in focus last decades, while the similar approach can be found in the ancient civilizations. In any kind of such progress it is important to remember the founders and pioneers and to understand their character and the circumstances that push them to go beyond existing knowledge.",
journal = "Abstracts of 15th International conference Dynamical Systems - Theory and Applications",
title = "Great persons and results make biomimetics incredibly inspirational",
url = "https://hdl.handle.net/21.15107/rcub_rims_471"
}

Atanasovska, I.,& Momčilović, D.. (2019). Great persons and results make biomimetics incredibly inspirational. in Abstracts of 15th International conference Dynamical Systems - Theory and Applications.
https://hdl.handle.net/21.15107/rcub_rims_471

Atanasovska I, Momčilović D. Great persons and results make biomimetics incredibly inspirational. in Abstracts of 15th International conference Dynamical Systems - Theory and Applications. 2019;.
https://hdl.handle.net/21.15107/rcub_rims_471 .

Atanasovska, Ivana, Momčilović, Dejan, "Great persons and results make biomimetics incredibly inspirational" in Abstracts of 15th International conference Dynamical Systems - Theory and Applications (2019),
https://hdl.handle.net/21.15107/rcub_rims_471 .

TY  - CONF
AU  - Atanasovska, Ivana
AU  - Hedrih (Stevanović), Katica
AU  - Momčilović, Dejan
PY  - 2019
UR  - http://rims.institutims.rs/handle/123456789/475
AB  - The main performances of involute gears operations lead to the appearance of nonlinear dynamic behaviour and impact. In this paper the influence of mild wear of the tooth flanks of gears without surface hardening on the vibro-impact behaviour is considered. For this purpose, a new theoretical model for vibro-impact dynamics of spur gears with mild wear on tooth flanks is developed and described. The developed theoretical model is based on the main postulates of a model of the central centric collision of two fictive rolling disks with radii equal to the radii of kinematic diameters of the pinion and the wheel, as well as on a combined analytical – Finite Element method for calculation the contact deformations, contact pressure and wear on tooth flanks surfaces. A particular gear pair is used for presentation of the developed model.
PB  - NODYS Publications, Rome, Italy
C3  - Book of abstracts –The First International Nonlinear Dynamics Conference-NODYCON2019, Rome, Italia
T1  - A theoretical model for vibro-impact dynamics of spur gears with tooth flanks wear
EP  - 38
SP  - 37
UR  - https://hdl.handle.net/21.15107/rcub_rims_475
ER  - 

@conference{
author = "Atanasovska, Ivana and Hedrih (Stevanović), Katica and Momčilović, Dejan",
year = "2019",
abstract = "The main performances of involute gears operations lead to the appearance of nonlinear dynamic behaviour and impact. In this paper the influence of mild wear of the tooth flanks of gears without surface hardening on the vibro-impact behaviour is considered. For this purpose, a new theoretical model for vibro-impact dynamics of spur gears with mild wear on tooth flanks is developed and described. The developed theoretical model is based on the main postulates of a model of the central centric collision of two fictive rolling disks with radii equal to the radii of kinematic diameters of the pinion and the wheel, as well as on a combined analytical – Finite Element method for calculation the contact deformations, contact pressure and wear on tooth flanks surfaces. A particular gear pair is used for presentation of the developed model.",
publisher = "NODYS Publications, Rome, Italy",
journal = "Book of abstracts –The First International Nonlinear Dynamics Conference-NODYCON2019, Rome, Italia",
title = "A theoretical model for vibro-impact dynamics of spur gears with tooth flanks wear",
pages = "38-37",
url = "https://hdl.handle.net/21.15107/rcub_rims_475"
}

Atanasovska, I., Hedrih (Stevanović), K.,& Momčilović, D.. (2019). A theoretical model for vibro-impact dynamics of spur gears with tooth flanks wear. in Book of abstracts –The First International Nonlinear Dynamics Conference-NODYCON2019, Rome, Italia
NODYS Publications, Rome, Italy., 37-38.
https://hdl.handle.net/21.15107/rcub_rims_475

Atanasovska I, Hedrih (Stevanović) K, Momčilović D. A theoretical model for vibro-impact dynamics of spur gears with tooth flanks wear. in Book of abstracts –The First International Nonlinear Dynamics Conference-NODYCON2019, Rome, Italia. 2019;:37-38.
https://hdl.handle.net/21.15107/rcub_rims_475 .

Atanasovska, Ivana, Hedrih (Stevanović), Katica, Momčilović, Dejan, "A theoretical model for vibro-impact dynamics of spur gears with tooth flanks wear" in Book of abstracts –The First International Nonlinear Dynamics Conference-NODYCON2019, Rome, Italia (2019):37-38,
https://hdl.handle.net/21.15107/rcub_rims_475 .

TY  - CONF
AU  - Atanasovska, Ivana
AU  - Momčilović, Dejan
PY  - 2019
UR  - http://rims.institutims.rs/handle/123456789/474
AB  - The aim of the paper is to point up the possibilities of biomimetics principles in the machine elements design. During last decades, the new requirements in machine elements design are placed in front of the experts. The optimization of machine elements is focused on the size reduction, energy efficiency increasing, as well as on the higher reliability. When it is starting to seems that the engineers are without inspiration, the disciplines that returning us to the nature as an inspiration began to occupy the focus. Using biomimetics principles as inspiration, fine optimization of present geometries of machine elements can be done, which will lead to longer and safer life of machines. The good example of solutions offered by nature, with emphasize on design of geometry can be found in the references of few authors dedicated to research in this area. Examples of well-known precise calculations and high "commercial" innovations are found everywhere around us.
PB  - Manipal University Jaipur, India
C3  - Book of abstracts - International Conference on Advances in Mechanical Engineering and Nanotechnology - ICAMEN2019, Jaipur, India
T1  - On biomimetics in machine elements design
SP  - 30
UR  - https://hdl.handle.net/21.15107/rcub_rims_474
ER  - 

@conference{
author = "Atanasovska, Ivana and Momčilović, Dejan",
year = "2019",
abstract = "The aim of the paper is to point up the possibilities of biomimetics principles in the machine elements design. During last decades, the new requirements in machine elements design are placed in front of the experts. The optimization of machine elements is focused on the size reduction, energy efficiency increasing, as well as on the higher reliability. When it is starting to seems that the engineers are without inspiration, the disciplines that returning us to the nature as an inspiration began to occupy the focus. Using biomimetics principles as inspiration, fine optimization of present geometries of machine elements can be done, which will lead to longer and safer life of machines. The good example of solutions offered by nature, with emphasize on design of geometry can be found in the references of few authors dedicated to research in this area. Examples of well-known precise calculations and high "commercial" innovations are found everywhere around us.",
publisher = "Manipal University Jaipur, India",
journal = "Book of abstracts - International Conference on Advances in Mechanical Engineering and Nanotechnology - ICAMEN2019, Jaipur, India",
title = "On biomimetics in machine elements design",
pages = "30",
url = "https://hdl.handle.net/21.15107/rcub_rims_474"
}

Atanasovska, I.,& Momčilović, D.. (2019). On biomimetics in machine elements design. in Book of abstracts - International Conference on Advances in Mechanical Engineering and Nanotechnology - ICAMEN2019, Jaipur, India
Manipal University Jaipur, India., 30.
https://hdl.handle.net/21.15107/rcub_rims_474

Atanasovska I, Momčilović D. On biomimetics in machine elements design. in Book of abstracts - International Conference on Advances in Mechanical Engineering and Nanotechnology - ICAMEN2019, Jaipur, India. 2019;:30.
https://hdl.handle.net/21.15107/rcub_rims_474 .

Atanasovska, Ivana, Momčilović, Dejan, "On biomimetics in machine elements design" in Book of abstracts - International Conference on Advances in Mechanical Engineering and Nanotechnology - ICAMEN2019, Jaipur, India (2019):30,
https://hdl.handle.net/21.15107/rcub_rims_474 .

TY  - CONF
AU  - Atanasovska, Ivana
AU  - Momčilović, Dejan
AU  - Vulović, Snežana
PY  - 2019
UR  - http://rims.institutims.rs/handle/123456789/467
AB  - Major function of railway vehicles absorbers is to absorb energy through controlled deformation during frontal rail vehicle collisions. The results presented and discussed in this paper is a part of the research of one particular type of absorber consist of a thin-walled seamless tube and conical mandrel. The influence of the groove, which occurred during cold worked tube manufacturing, on the behavior and energy absorption of this type of shock absorber is analyzed. The coupled nonlinear Finite Element Analysis is used for calculation of stress-strain state and plastic deformation work/volume of tube absorbers with defects. The results of the research presented in this paper show that the grooves on outer surface of expansion tubes in some cases can be beneficial due to strain hardening process in root of stress concentrator i.e. defect. The beneficial effect of grooves is proven by simulation in which is obvious that the energy absorbed level could be higher on expansion tube with grooves.
C3  - Proceedings of the 7h International Congress of Serbian Society of Mechanics, Sremski Karlovci, Serbia
T1  - The influence of grooves on the behavior of steel tube shock absorbers
EP  - 6
SP  - 1
UR  - https://hdl.handle.net/21.15107/rcub_rims_467
ER  - 

@conference{
author = "Atanasovska, Ivana and Momčilović, Dejan and Vulović, Snežana",
year = "2019",
abstract = "Major function of railway vehicles absorbers is to absorb energy through controlled deformation during frontal rail vehicle collisions. The results presented and discussed in this paper is a part of the research of one particular type of absorber consist of a thin-walled seamless tube and conical mandrel. The influence of the groove, which occurred during cold worked tube manufacturing, on the behavior and energy absorption of this type of shock absorber is analyzed. The coupled nonlinear Finite Element Analysis is used for calculation of stress-strain state and plastic deformation work/volume of tube absorbers with defects. The results of the research presented in this paper show that the grooves on outer surface of expansion tubes in some cases can be beneficial due to strain hardening process in root of stress concentrator i.e. defect. The beneficial effect of grooves is proven by simulation in which is obvious that the energy absorbed level could be higher on expansion tube with grooves.",
journal = "Proceedings of the 7h International Congress of Serbian Society of Mechanics, Sremski Karlovci, Serbia",
title = "The influence of grooves on the behavior of steel tube shock absorbers",
pages = "6-1",
url = "https://hdl.handle.net/21.15107/rcub_rims_467"
}

Atanasovska, I., Momčilović, D.,& Vulović, S.. (2019). The influence of grooves on the behavior of steel tube shock absorbers. in Proceedings of the 7h International Congress of Serbian Society of Mechanics, Sremski Karlovci, Serbia, 1-6.
https://hdl.handle.net/21.15107/rcub_rims_467

Atanasovska I, Momčilović D, Vulović S. The influence of grooves on the behavior of steel tube shock absorbers. in Proceedings of the 7h International Congress of Serbian Society of Mechanics, Sremski Karlovci, Serbia. 2019;:1-6.
https://hdl.handle.net/21.15107/rcub_rims_467 .

Atanasovska, Ivana, Momčilović, Dejan, Vulović, Snežana, "The influence of grooves on the behavior of steel tube shock absorbers" in Proceedings of the 7h International Congress of Serbian Society of Mechanics, Sremski Karlovci, Serbia (2019):1-6,
https://hdl.handle.net/21.15107/rcub_rims_467 .

TY  - JOUR
AU  - Atanasovska, Ivana
AU  - Momčilović, Dejan
AU  - Ristić, Ognjen
PY  - 2019
UR  - http://rims.institutims.rs/handle/123456789/356
AB  - Many new requirements in the field of experimental mechanics, like testing of metallic materials, emphasize traceability and accuracy of test results as the end goal. These requirements have energy efficiency context too, due to the increase of mass productions of many finished and semi-finished products based on steel metallurgy. Combined, both of the above-noted perspectives impose the need for improvements of some of the existing test methods. This paper describes one such improvement, the developing of the new insert tool for testing of shear strength of the welded fabric, for civil engineering. The developed tool allows repeated testing of welded joints sampled from the welded fabric of different dimensions without tool changes and is generally related with the procedure for the determination of shear strength properties of different sizes of wires used for welded fabric. The construction of the tool insert allows aiming high operation safety and higher accuracy of results, which is described in detail. The paper also presents experimental results and the Finite Element Analysis performed in order to verify the impact of insert tool application on the testing results. The obtained results and conclusion about the possible contributions of the developed insert tool for extensively testing of welded fabric for civil engineering are discussed.
PB  - Savez inženjera metalurgije Srbije, Beograd
T2  - Metallurgical and Materials Engineering
T1  - The new tool insert design for prevention the rotation of horizontal wire during shear testing of welded fabric
EP  - 170
IS  - 2
SP  - 163
VL  - 25
DO  - 10.30544/425
ER  - 

@article{
author = "Atanasovska, Ivana and Momčilović, Dejan and Ristić, Ognjen",
year = "2019",
abstract = "Many new requirements in the field of experimental mechanics, like testing of metallic materials, emphasize traceability and accuracy of test results as the end goal. These requirements have energy efficiency context too, due to the increase of mass productions of many finished and semi-finished products based on steel metallurgy. Combined, both of the above-noted perspectives impose the need for improvements of some of the existing test methods. This paper describes one such improvement, the developing of the new insert tool for testing of shear strength of the welded fabric, for civil engineering. The developed tool allows repeated testing of welded joints sampled from the welded fabric of different dimensions without tool changes and is generally related with the procedure for the determination of shear strength properties of different sizes of wires used for welded fabric. The construction of the tool insert allows aiming high operation safety and higher accuracy of results, which is described in detail. The paper also presents experimental results and the Finite Element Analysis performed in order to verify the impact of insert tool application on the testing results. The obtained results and conclusion about the possible contributions of the developed insert tool for extensively testing of welded fabric for civil engineering are discussed.",
publisher = "Savez inženjera metalurgije Srbije, Beograd",
journal = "Metallurgical and Materials Engineering",
title = "The new tool insert design for prevention the rotation of horizontal wire during shear testing of welded fabric",
pages = "170-163",
number = "2",
volume = "25",
doi = "10.30544/425"
}

Atanasovska, I., Momčilović, D.,& Ristić, O.. (2019). The new tool insert design for prevention the rotation of horizontal wire during shear testing of welded fabric. in Metallurgical and Materials Engineering
Savez inženjera metalurgije Srbije, Beograd., 25(2), 163-170.
https://doi.org/10.30544/425

Atanasovska I, Momčilović D, Ristić O. The new tool insert design for prevention the rotation of horizontal wire during shear testing of welded fabric. in Metallurgical and Materials Engineering. 2019;25(2):163-170.
doi:10.30544/425 .

Atanasovska, Ivana, Momčilović, Dejan, Ristić, Ognjen, "The new tool insert design for prevention the rotation of horizontal wire during shear testing of welded fabric" in Metallurgical and Materials Engineering, 25, no. 2 (2019):163-170,
https://doi.org/10.30544/425 . .

TY  - PAT
AU  - Atanasovska, Ivana
AU  - Momčilović, Dejan
AU  - Odanović, Zoran
AU  - Aleksić, Vujadin
AU  - Gavrilovski, Milorad
PY  - 2018
UR  - http://rims.institutims.rs/handle/123456789/483
T1  - Univerzalni alat za ispitivanje zateznih karakteristika šestougaonih čeličnih mreža za građevinarstvo
UR  - https://hdl.handle.net/21.15107/rcub_rims_483
ER  - 

@misc{
author = "Atanasovska, Ivana and Momčilović, Dejan and Odanović, Zoran and Aleksić, Vujadin and Gavrilovski, Milorad",
year = "2018",
title = "Univerzalni alat za ispitivanje zateznih karakteristika šestougaonih čeličnih mreža za građevinarstvo",
url = "https://hdl.handle.net/21.15107/rcub_rims_483"
}

Atanasovska, I., Momčilović, D., Odanović, Z., Aleksić, V.,& Gavrilovski, M.. (2018). Univerzalni alat za ispitivanje zateznih karakteristika šestougaonih čeličnih mreža za građevinarstvo. .
https://hdl.handle.net/21.15107/rcub_rims_483

Atanasovska I, Momčilović D, Odanović Z, Aleksić V, Gavrilovski M. Univerzalni alat za ispitivanje zateznih karakteristika šestougaonih čeličnih mreža za građevinarstvo. 2018;.
https://hdl.handle.net/21.15107/rcub_rims_483 .

Atanasovska, Ivana, Momčilović, Dejan, Odanović, Zoran, Aleksić, Vujadin, Gavrilovski, Milorad, "Univerzalni alat za ispitivanje zateznih karakteristika šestougaonih čeličnih mreža za građevinarstvo" (2018),
https://hdl.handle.net/21.15107/rcub_rims_483 .

TY  - CONF
AU  - Momčilović, Dejan
AU  - Atanasovska, Ivana
AU  - Milović, Ljubica
AU  - Odanović, Zoran
PY  - 2018
UR  - http://rims.institutims.rs/handle/123456789/473
AB  - The fracture surface appearances are slowly changed through decade’s side by advantages in technology of steel production.
Basic requirements for cleaner steels and lower energy consumption during production induce that newer steels have some
different fracture features compared to the old ones. This paper describes morphology of different corrosion fatigue and
stress corrosion cracks. The brief failure analysis with key results will be presented for each case mentioned in paper, and
emphasize will be on morphology and characteristic features of fracture surfaces. Macro appearance of fatigue cracks will be
discussed in detail and characteristic features of stress corrosion fractures will be analyzed. Also, the results from scanning
electron microscopy will be presented in this paper.
PB  - Society for Structural Integrity and Life – Prof. Dr Stojan Sedmak (DIVK)
C3  - Book of abstracts - 22nd European Conference on Fracture - ECF22: LOADING AND ENVIRONMENT EFFECTS ON STRUCTURAL INTEGRITY, Belgrade, Serbia
T1  - Morphology of corrosion fatigue and stress corrosion cracks on low alloy steels
SP  - 129
UR  - https://hdl.handle.net/21.15107/rcub_rims_473
ER  - 

@conference{
author = "Momčilović, Dejan and Atanasovska, Ivana and Milović, Ljubica and Odanović, Zoran",
year = "2018",
abstract = "The fracture surface appearances are slowly changed through decade’s side by advantages in technology of steel production.
Basic requirements for cleaner steels and lower energy consumption during production induce that newer steels have some
different fracture features compared to the old ones. This paper describes morphology of different corrosion fatigue and
stress corrosion cracks. The brief failure analysis with key results will be presented for each case mentioned in paper, and
emphasize will be on morphology and characteristic features of fracture surfaces. Macro appearance of fatigue cracks will be
discussed in detail and characteristic features of stress corrosion fractures will be analyzed. Also, the results from scanning
electron microscopy will be presented in this paper.",
publisher = "Society for Structural Integrity and Life – Prof. Dr Stojan Sedmak (DIVK)",
journal = "Book of abstracts - 22nd European Conference on Fracture - ECF22: LOADING AND ENVIRONMENT EFFECTS ON STRUCTURAL INTEGRITY, Belgrade, Serbia",
title = "Morphology of corrosion fatigue and stress corrosion cracks on low alloy steels",
pages = "129",
url = "https://hdl.handle.net/21.15107/rcub_rims_473"
}

Momčilović, D., Atanasovska, I., Milović, L.,& Odanović, Z.. (2018). Morphology of corrosion fatigue and stress corrosion cracks on low alloy steels. in Book of abstracts - 22nd European Conference on Fracture - ECF22: LOADING AND ENVIRONMENT EFFECTS ON STRUCTURAL INTEGRITY, Belgrade, Serbia
Society for Structural Integrity and Life – Prof. Dr Stojan Sedmak (DIVK)., 129.
https://hdl.handle.net/21.15107/rcub_rims_473

Momčilović D, Atanasovska I, Milović L, Odanović Z. Morphology of corrosion fatigue and stress corrosion cracks on low alloy steels. in Book of abstracts - 22nd European Conference on Fracture - ECF22: LOADING AND ENVIRONMENT EFFECTS ON STRUCTURAL INTEGRITY, Belgrade, Serbia. 2018;:129.
https://hdl.handle.net/21.15107/rcub_rims_473 .

Momčilović, Dejan, Atanasovska, Ivana, Milović, Ljubica, Odanović, Zoran, "Morphology of corrosion fatigue and stress corrosion cracks on low alloy steels" in Book of abstracts - 22nd European Conference on Fracture - ECF22: LOADING AND ENVIRONMENT EFFECTS ON STRUCTURAL INTEGRITY, Belgrade, Serbia (2018):129,
https://hdl.handle.net/21.15107/rcub_rims_473 .

TY  - CONF
AU  - Momčilović, Dejan
AU  - Milović, Ljubica
AU  - Atanasovska, Ivana
AU  - Odanović, Zoran
PY  - 2018
UR  - http://rims.institutims.rs/handle/123456789/472
AB  - Commercial gas cylinders are common type of pressure vessels in many health care and technical facilities. Unexpected
failures of gas cylinders occur despite of fact that the design, manufacture route, quality control, transportation, and handling
are specified by various standards and regulations, particularly in domain of periodic inspection. A case study of the sudden
failure of the 25 years old gas cylinder made of low-alloy steel is presented in this paper. Exploded cylinder was filled with
commercial mixture of nitrogen and CO/CO2. Results of chemical analysis, mechanical testing and microstructure and
fracture surface examination of gas cylinder material are given in this paper. Key results from failure analysis revealed micro
corrosion pitting as a consequence of undesired traces of moisture. This slow crack initiation combined with gas mixture
filling and exhausting cycles, promoted the local damage which could explain the mechanism of failure. In addition, the
analysis of gas cylinder material in moment of failure is evaluated by using the critical distance parameter
PB  - Society for Structural Integrity and Life – Prof. Dr Stojan Sedmak (DIVK)
C3  - Book of abstracts - 22nd European Conference on Fracture - ECF22: LOADING AND ENVIRONMENT EFFECTS ON STRUCTURAL INTEGRITY, Belgrade, serbia
T1  - Gas cylinder rupture induced by local corrosion damage
SP  - 128
UR  - https://hdl.handle.net/21.15107/rcub_rims_472
ER  - 

@conference{
author = "Momčilović, Dejan and Milović, Ljubica and Atanasovska, Ivana and Odanović, Zoran",
year = "2018",
abstract = "Commercial gas cylinders are common type of pressure vessels in many health care and technical facilities. Unexpected
failures of gas cylinders occur despite of fact that the design, manufacture route, quality control, transportation, and handling
are specified by various standards and regulations, particularly in domain of periodic inspection. A case study of the sudden
failure of the 25 years old gas cylinder made of low-alloy steel is presented in this paper. Exploded cylinder was filled with
commercial mixture of nitrogen and CO/CO2. Results of chemical analysis, mechanical testing and microstructure and
fracture surface examination of gas cylinder material are given in this paper. Key results from failure analysis revealed micro
corrosion pitting as a consequence of undesired traces of moisture. This slow crack initiation combined with gas mixture
filling and exhausting cycles, promoted the local damage which could explain the mechanism of failure. In addition, the
analysis of gas cylinder material in moment of failure is evaluated by using the critical distance parameter",
publisher = "Society for Structural Integrity and Life – Prof. Dr Stojan Sedmak (DIVK)",
journal = "Book of abstracts - 22nd European Conference on Fracture - ECF22: LOADING AND ENVIRONMENT EFFECTS ON STRUCTURAL INTEGRITY, Belgrade, serbia",
title = "Gas cylinder rupture induced by local corrosion damage",
pages = "128",
url = "https://hdl.handle.net/21.15107/rcub_rims_472"
}

Momčilović, D., Milović, L., Atanasovska, I.,& Odanović, Z.. (2018). Gas cylinder rupture induced by local corrosion damage. in Book of abstracts - 22nd European Conference on Fracture - ECF22: LOADING AND ENVIRONMENT EFFECTS ON STRUCTURAL INTEGRITY, Belgrade, serbia
Society for Structural Integrity and Life – Prof. Dr Stojan Sedmak (DIVK)., 128.
https://hdl.handle.net/21.15107/rcub_rims_472

Momčilović D, Milović L, Atanasovska I, Odanović Z. Gas cylinder rupture induced by local corrosion damage. in Book of abstracts - 22nd European Conference on Fracture - ECF22: LOADING AND ENVIRONMENT EFFECTS ON STRUCTURAL INTEGRITY, Belgrade, serbia. 2018;:128.
https://hdl.handle.net/21.15107/rcub_rims_472 .

Momčilović, Dejan, Milović, Ljubica, Atanasovska, Ivana, Odanović, Zoran, "Gas cylinder rupture induced by local corrosion damage" in Book of abstracts - 22nd European Conference on Fracture - ECF22: LOADING AND ENVIRONMENT EFFECTS ON STRUCTURAL INTEGRITY, Belgrade, serbia (2018):128,
https://hdl.handle.net/21.15107/rcub_rims_472 .

TY  - CONF
AU  - Momčilović, Dejan
AU  - Atanasovska, Ivana
AU  - Mitrović, Radivoje
PY  - 2018
UR  - http://rims.institutims.rs/handle/123456789/466
AB  - The consideration of the optimal design of the transition zone of turbine shaft to flange has a high impact within the turbines design. The main principles of biomimetics give a new and prosperous point of view on the machine design, and could recommend a new options in the design solutions for the zones with high stress concentrations. In this paper, a particular turbine shaft with flange is used for research of the possible biomimetics solutions in the zone of the transition radius. The traditional design of this transition zone is compare with the new design option inspired with transition zones in nature. The presented turbine shaft to flange design by biomimetics principles are based on the design of transition zones on trees. The Finite Element Analysis is performed for the traditional designed transition zone, as well as for the transition zone with design based on the biomimetics. The comparative analysis of the obtained results lead to the conclusions about the advantages of the biomimetics approach in this area of machine design.
PB  - University of East Sarajevo, Faculty of Mechanical Engineering East Sarajevo
C3  - Proceedings of the 4rd International Scientific Conference ”Conference on Mechanical Engineering Technologies and Applications” – COMETA2018, East Sarajevo – Jahorina, B&H, RS
T1  - Design of the transition zone of turbine shaft to flange by biomimetics principles
EP  - 463
SP  - 458
UR  - https://hdl.handle.net/21.15107/rcub_rims_466
ER  - 

@conference{
author = "Momčilović, Dejan and Atanasovska, Ivana and Mitrović, Radivoje",
year = "2018",
abstract = "The consideration of the optimal design of the transition zone of turbine shaft to flange has a high impact within the turbines design. The main principles of biomimetics give a new and prosperous point of view on the machine design, and could recommend a new options in the design solutions for the zones with high stress concentrations. In this paper, a particular turbine shaft with flange is used for research of the possible biomimetics solutions in the zone of the transition radius. The traditional design of this transition zone is compare with the new design option inspired with transition zones in nature. The presented turbine shaft to flange design by biomimetics principles are based on the design of transition zones on trees. The Finite Element Analysis is performed for the traditional designed transition zone, as well as for the transition zone with design based on the biomimetics. The comparative analysis of the obtained results lead to the conclusions about the advantages of the biomimetics approach in this area of machine design.",
publisher = "University of East Sarajevo, Faculty of Mechanical Engineering East Sarajevo",
journal = "Proceedings of the 4rd International Scientific Conference ”Conference on Mechanical Engineering Technologies and Applications” – COMETA2018, East Sarajevo – Jahorina, B&H, RS",
title = "Design of the transition zone of turbine shaft to flange by biomimetics principles",
pages = "463-458",
url = "https://hdl.handle.net/21.15107/rcub_rims_466"
}

Momčilović, D., Atanasovska, I.,& Mitrović, R.. (2018). Design of the transition zone of turbine shaft to flange by biomimetics principles. in Proceedings of the 4rd International Scientific Conference ”Conference on Mechanical Engineering Technologies and Applications” – COMETA2018, East Sarajevo – Jahorina, B&H, RS
University of East Sarajevo, Faculty of Mechanical Engineering East Sarajevo., 458-463.
https://hdl.handle.net/21.15107/rcub_rims_466

Momčilović D, Atanasovska I, Mitrović R. Design of the transition zone of turbine shaft to flange by biomimetics principles. in Proceedings of the 4rd International Scientific Conference ”Conference on Mechanical Engineering Technologies and Applications” – COMETA2018, East Sarajevo – Jahorina, B&H, RS. 2018;:458-463.
https://hdl.handle.net/21.15107/rcub_rims_466 .

Momčilović, Dejan, Atanasovska, Ivana, Mitrović, Radivoje, "Design of the transition zone of turbine shaft to flange by biomimetics principles" in Proceedings of the 4rd International Scientific Conference ”Conference on Mechanical Engineering Technologies and Applications” – COMETA2018, East Sarajevo – Jahorina, B&H, RS (2018):458-463,
https://hdl.handle.net/21.15107/rcub_rims_466 .

TY  - JOUR
AU  - Atanasovska, Ivana
AU  - Momčilović, Dejan
AU  - Gavrilovski, Milorad
PY  - 2018
UR  - http://rims.institutims.rs/handle/123456789/337
AB  - The developing of the universal tool for testing of tensile properties of hexagonal steel wire mesh for civil engineering is described in this paper. The developed tool allows repeated testing of hexagonal steel wire mesh of different dimensions without tool changes and is generally related with the procedure for the determination of tensile strength properties of different wire meshes. The construction of the tool which is related to the aims of the decreased mass consumption and high operation safety is described in detail. Particular attention is focused on the safety component of the tool which ensuring safety testing by preventing slipping of the wire mesh samples during loading. The paper also presents the Finite Element Analysis performed in order to verify the high safety factor of the developed tool. The contact regions with stress concentration behavior are analyzed by non-linear solvers. The obtained results and conclusion about the possible contributions of the developed universal tool for extensively testing of wire meshes for civil engineering are discussed.
PB  - Savez inženjera metalurgije Srbije, Beograd
T2  - Metallurgical and Materials Engineering
T1  - Development of the universal tool for testing of tensile properties of hexagonal steel wire mesh for civil engineering
EP  - 122
IS  - 2
SP  - 113
VL  - 24
DO  - 10.30544/365
ER  - 

@article{
author = "Atanasovska, Ivana and Momčilović, Dejan and Gavrilovski, Milorad",
year = "2018",
abstract = "The developing of the universal tool for testing of tensile properties of hexagonal steel wire mesh for civil engineering is described in this paper. The developed tool allows repeated testing of hexagonal steel wire mesh of different dimensions without tool changes and is generally related with the procedure for the determination of tensile strength properties of different wire meshes. The construction of the tool which is related to the aims of the decreased mass consumption and high operation safety is described in detail. Particular attention is focused on the safety component of the tool which ensuring safety testing by preventing slipping of the wire mesh samples during loading. The paper also presents the Finite Element Analysis performed in order to verify the high safety factor of the developed tool. The contact regions with stress concentration behavior are analyzed by non-linear solvers. The obtained results and conclusion about the possible contributions of the developed universal tool for extensively testing of wire meshes for civil engineering are discussed.",
publisher = "Savez inženjera metalurgije Srbije, Beograd",
journal = "Metallurgical and Materials Engineering",
title = "Development of the universal tool for testing of tensile properties of hexagonal steel wire mesh for civil engineering",
pages = "122-113",
number = "2",
volume = "24",
doi = "10.30544/365"
}

Atanasovska, I., Momčilović, D.,& Gavrilovski, M.. (2018). Development of the universal tool for testing of tensile properties of hexagonal steel wire mesh for civil engineering. in Metallurgical and Materials Engineering
Savez inženjera metalurgije Srbije, Beograd., 24(2), 113-122.
https://doi.org/10.30544/365

Atanasovska I, Momčilović D, Gavrilovski M. Development of the universal tool for testing of tensile properties of hexagonal steel wire mesh for civil engineering. in Metallurgical and Materials Engineering. 2018;24(2):113-122.
doi:10.30544/365 .

Atanasovska, Ivana, Momčilović, Dejan, Gavrilovski, Milorad, "Development of the universal tool for testing of tensile properties of hexagonal steel wire mesh for civil engineering" in Metallurgical and Materials Engineering, 24, no. 2 (2018):113-122,
https://doi.org/10.30544/365 . .

TY  - JOUR
AU  - Mitrović, Radivoje
AU  - Momčilović, Dejan
AU  - Atanasovska, Ivana
PY  - 2018
UR  - http://rims.institutims.rs/handle/123456789/344
AB  - Researchers in the field of fracture mechanics, predominantly developing appropriate solution algorithms for problems of solid bodies with cracks. Problems in mechanics generally, related with fracture and fatigue for solid bodies with various geometries of sharp notches, are studied to a much lesser extent. This situation can be explained by analytical difficulties arising in solving problems of elasticity theory for bodies with rounded notches. To solve problems of such class, starting from data on stress concentration in the rounded notch tip with a significant radius of curvature, simplified solutions with are therefore of great importance. Recent years, due to constant rise of computing power and development of numerical methods, re-evaluation of stress concentration factors from a viewpoint of theory of elasticity is present. This is mainly as a feedback from industry, which have requirements toward mega and nanostructures. Corrosion represents an important limitation to the safe and reliable use of many alloys in various industries. Pitting corrosion is a form of serious damage on metals surface such as high-strength aluminum alloys and stainless steel, which are susceptible to pitting when exposed to a corrosive attack in aggressive environments. This is particularly valid for dynamic loaded structures. The basic idea behind this paper is finding links between different scientific and engineering disciplines, which will enable useful level of applicability of existing knowledge. The subject of this paper is application of new method of determine length scale parameter for estimating the mechanistic aspect of corrosion pit under uniaxial/multiaxial high-cycle fatigue loading….
PB  - Udruženje intelektualaca za razvoj nauke u Srbiji, Novi Sad
T2  - Applied Engineering Letters
T1  - Determination of critical size of corrosion pit on mechanical elements in hydro power plants
EP  - 5
IS  - 1
SP  - 1
VL  - 3
DO  - 10.18485/aeletters.2018.3.1.1
ER  - 

@article{
author = "Mitrović, Radivoje and Momčilović, Dejan and Atanasovska, Ivana",
year = "2018",
abstract = "Researchers in the field of fracture mechanics, predominantly developing appropriate solution algorithms for problems of solid bodies with cracks. Problems in mechanics generally, related with fracture and fatigue for solid bodies with various geometries of sharp notches, are studied to a much lesser extent. This situation can be explained by analytical difficulties arising in solving problems of elasticity theory for bodies with rounded notches. To solve problems of such class, starting from data on stress concentration in the rounded notch tip with a significant radius of curvature, simplified solutions with are therefore of great importance. Recent years, due to constant rise of computing power and development of numerical methods, re-evaluation of stress concentration factors from a viewpoint of theory of elasticity is present. This is mainly as a feedback from industry, which have requirements toward mega and nanostructures. Corrosion represents an important limitation to the safe and reliable use of many alloys in various industries. Pitting corrosion is a form of serious damage on metals surface such as high-strength aluminum alloys and stainless steel, which are susceptible to pitting when exposed to a corrosive attack in aggressive environments. This is particularly valid for dynamic loaded structures. The basic idea behind this paper is finding links between different scientific and engineering disciplines, which will enable useful level of applicability of existing knowledge. The subject of this paper is application of new method of determine length scale parameter for estimating the mechanistic aspect of corrosion pit under uniaxial/multiaxial high-cycle fatigue loading….",
publisher = "Udruženje intelektualaca za razvoj nauke u Srbiji, Novi Sad",
journal = "Applied Engineering Letters",
title = "Determination of critical size of corrosion pit on mechanical elements in hydro power plants",
pages = "5-1",
number = "1",
volume = "3",
doi = "10.18485/aeletters.2018.3.1.1"
}

Mitrović, R., Momčilović, D.,& Atanasovska, I.. (2018). Determination of critical size of corrosion pit on mechanical elements in hydro power plants. in Applied Engineering Letters
Udruženje intelektualaca za razvoj nauke u Srbiji, Novi Sad., 3(1), 1-5.
https://doi.org/10.18485/aeletters.2018.3.1.1

Mitrović R, Momčilović D, Atanasovska I. Determination of critical size of corrosion pit on mechanical elements in hydro power plants. in Applied Engineering Letters. 2018;3(1):1-5.
doi:10.18485/aeletters.2018.3.1.1 .

Mitrović, Radivoje, Momčilović, Dejan, Atanasovska, Ivana, "Determination of critical size of corrosion pit on mechanical elements in hydro power plants" in Applied Engineering Letters, 3, no. 1 (2018):1-5,
https://doi.org/10.18485/aeletters.2018.3.1.1 . .