Tie-rods of the bucket wheel excavator slewing superstructure: A study of the eye plate stress state
Abstract
Tie-rods of the bucket wheel and counterweight booms are vital parts of the bucket wheel excavator slewing superstructure. This paper is dedicated to the problem of identifying the stress state of the critical cross-section ('net section') of the eye plates on these tie-rods. It presents the results of the experimental and numerical investigations carried out on the eyebar model. The results show the appearance of a plastic deformation in the zone near the contour of the hole even when the eye is subjected to the loads within the range of the permissible loads prescribed by the standard DIN 22261-2. Plastification in the eye net section occurs across the full thickness of the plate, but it does not jeopardize the integrity of the structure. The stress value in the eye net section, calculated in accordance with the standard DIN 22261-2, is significantly lower than the actual stress values around the hole and serves only as a comparative value for the static strength proof for the eye.
Keywords:
Tie-rod / Stress state / Numerical-experimental investigations / Eye plate / Bucket wheel excavatorSource:
Engineering Structures, 2020, 207Publisher:
- Elsevier Sci Ltd, Oxford
Funding / projects:
Related info:
DOI: 10.1016/j.engstruct.2020.110233
ISSN: 0141-0296
WoS: 000514214200043
Scopus: 2-s2.0-85078319025
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Institution/Community
Institut za ispitivanje materijalaTY - JOUR AU - Bošnjak, Srđan AU - Zrnić, Nenad AU - Momčilović, Dejan AU - Gnjatović, Nebojša AU - Milenović, Ivan Lj. PY - 2020 UR - http://rims.institutims.rs/handle/123456789/391 AB - Tie-rods of the bucket wheel and counterweight booms are vital parts of the bucket wheel excavator slewing superstructure. This paper is dedicated to the problem of identifying the stress state of the critical cross-section ('net section') of the eye plates on these tie-rods. It presents the results of the experimental and numerical investigations carried out on the eyebar model. The results show the appearance of a plastic deformation in the zone near the contour of the hole even when the eye is subjected to the loads within the range of the permissible loads prescribed by the standard DIN 22261-2. Plastification in the eye net section occurs across the full thickness of the plate, but it does not jeopardize the integrity of the structure. The stress value in the eye net section, calculated in accordance with the standard DIN 22261-2, is significantly lower than the actual stress values around the hole and serves only as a comparative value for the static strength proof for the eye. PB - Elsevier Sci Ltd, Oxford T2 - Engineering Structures T1 - Tie-rods of the bucket wheel excavator slewing superstructure: A study of the eye plate stress state VL - 207 DO - 10.1016/j.engstruct.2020.110233 ER -
@article{ author = "Bošnjak, Srđan and Zrnić, Nenad and Momčilović, Dejan and Gnjatović, Nebojša and Milenović, Ivan Lj.", year = "2020", abstract = "Tie-rods of the bucket wheel and counterweight booms are vital parts of the bucket wheel excavator slewing superstructure. This paper is dedicated to the problem of identifying the stress state of the critical cross-section ('net section') of the eye plates on these tie-rods. It presents the results of the experimental and numerical investigations carried out on the eyebar model. The results show the appearance of a plastic deformation in the zone near the contour of the hole even when the eye is subjected to the loads within the range of the permissible loads prescribed by the standard DIN 22261-2. Plastification in the eye net section occurs across the full thickness of the plate, but it does not jeopardize the integrity of the structure. The stress value in the eye net section, calculated in accordance with the standard DIN 22261-2, is significantly lower than the actual stress values around the hole and serves only as a comparative value for the static strength proof for the eye.", publisher = "Elsevier Sci Ltd, Oxford", journal = "Engineering Structures", title = "Tie-rods of the bucket wheel excavator slewing superstructure: A study of the eye plate stress state", volume = "207", doi = "10.1016/j.engstruct.2020.110233" }
Bošnjak, S., Zrnić, N., Momčilović, D., Gnjatović, N.,& Milenović, I. Lj.. (2020). Tie-rods of the bucket wheel excavator slewing superstructure: A study of the eye plate stress state. in Engineering Structures Elsevier Sci Ltd, Oxford., 207. https://doi.org/10.1016/j.engstruct.2020.110233
Bošnjak S, Zrnić N, Momčilović D, Gnjatović N, Milenović IL. Tie-rods of the bucket wheel excavator slewing superstructure: A study of the eye plate stress state. in Engineering Structures. 2020;207. doi:10.1016/j.engstruct.2020.110233 .
Bošnjak, Srđan, Zrnić, Nenad, Momčilović, Dejan, Gnjatović, Nebojša, Milenović, Ivan Lj., "Tie-rods of the bucket wheel excavator slewing superstructure: A study of the eye plate stress state" in Engineering Structures, 207 (2020), https://doi.org/10.1016/j.engstruct.2020.110233 . .