A general phase-field model for simulating impact-sliding contact failure

authored by: Che Wang, Dezhi Zheng, Chuanwei Zhang, Le Gu, Kun Shu, Fadi Aldakheel, Peter Wriggers
Abstract: Multiple failure modes of cyclic impact-sliding contacts, including brittle fracture, shear failure, and low-cycle fatigue, are investigated within the work. For this regard, a general thermo-elasto-plastic phase-field model is developed and validated that considers brittle-ductile failure mode transitions and fatigue degradation effects. And a temperature-dependent cyclic constitutive relation, combined with thermal softening, damage degradation, strain hardening, and fatigue degradation, is introduced to explain the cyclic thermo-elasto-plastic behavior of bearing steels. Combining the dynamic point/line contact model and the general phase-field model, the damage evolution and failure mode transitions of typical bearing parts under impact-sliding contacts are studied. The results indicate that cage-pockets and balls undergo low-cycle fatigue at low impact-sliding velocities, while guiding surfaces of the cage and ring are subjected to shear failure during cyclic high-speed sliding. Moreover, it is revealed that the abnormal phenomenon of more severe damage for the harder material than the softer material is due to multiple effects of strong thermal softening, damage degradation, and fatigue degradation.
Organisation(s): Institute of Mechanics and Computational Mechanics
Institute of Continuum Mechanics
External Organisation(s): Harbin Institute of Technology
Type: Article
Journal: International Journal of Mechanical Sciences
Volume: 273
No. of pages: 16
ISSN: 0020-7403
Publication date: 21.03.2024
Publication status: E-pub ahead of print
Peer reviewed: Yes
ASJC Scopus subject areas: Civil and Structural Engineering, Materials Science(all), Condensed Matter Physics, Aerospace Engineering, Ocean Engineering, Mechanics of Materials, Mechanical Engineering, Applied Mathematics
Electronic version(s): https://doi.org/10.1016/j.ijmecsci.2024.109215 (Access: Closed)
: Details in the research portal "Research@Leibniz University"

BibTeX

@article{8df22932c9d14c40ae2cc7325b0f45ba,
title = "A general phase-field model for simulating impact-sliding contact failure",
abstract = "Multiple failure modes of cyclic impact-sliding contacts, including brittle fracture, shear failure, and low-cycle fatigue, are investigated within the work. For this regard, a general thermo-elasto-plastic phase-field model is developed and validated that considers brittle-ductile failure mode transitions and fatigue degradation effects. And a temperature-dependent cyclic constitutive relation, combined with thermal softening, damage degradation, strain hardening, and fatigue degradation, is introduced to explain the cyclic thermo-elasto-plastic behavior of bearing steels. Combining the dynamic point/line contact model and the general phase-field model, the damage evolution and failure mode transitions of typical bearing parts under impact-sliding contacts are studied. The results indicate that cage-pockets and balls undergo low-cycle fatigue at low impact-sliding velocities, while guiding surfaces of the cage and ring are subjected to shear failure during cyclic high-speed sliding. Moreover, it is revealed that the abnormal phenomenon of more severe damage for the harder material than the softer material is due to multiple effects of strong thermal softening, damage degradation, and fatigue degradation.",
keywords = "Abnormal wear, Cyclic impact-sliding contacts, Ductile failure, Fatigue degradation",
author = "Che Wang and Dezhi Zheng and Chuanwei Zhang and Le Gu and Kun Shu and Fadi Aldakheel and Peter Wriggers",
note = "Funding Information: This work is supported by the Key Basic Research Project (No. J2019-IV-0004-0071 ), the National Natural Science Foundation of China (No. 52175164 , 52205191 ). The author F. Aldakheel gratefully acknowledges support for this research by the “ German Research Foundation ” (DFG) in the International Research Training Group (IRTG) 2657 program (No. 433082294 ). C. Wang would like to thank China Scholarship Council (No. 202006120162 ) for the financial support of studying aboard. ",
year = "2024",
month = mar,
day = "21",
doi = "10.1016/j.ijmecsci.2024.109215",
language = "English",
volume = "273",
journal = "International Journal of Mechanical Sciences",
issn = "0020-7403",
publisher = "Elsevier Ltd.",
}