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Analysis of contact fatigue coupled with geometry and material nonlinearities by Theory of critical distances

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Atanasovska, Ivana
Momčilović, Dejan
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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-non...linear 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.

Keywords:
contact / fatigue / coupled nonlinearities / Finite Element Analysis / Theory of Critical Distances
Source:
2nd Conference on Nonlinearity, Belgrade, 2022, 27-47
[ Google Scholar ]
Handle
https://hdl.handle.net/21.15107/rcub_rims_458
URI
http://rims.institutims.rs/handle/123456789/458
Collections
  • Radovi istraživača / Researchers' publications
Institution/Community
Institut za ispitivanje materijala
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 .

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