Failure of high-speed bearing at cyclic impact-sliding contacts

Numerical and experimental analysis

verfasst von
Che Wang, Fadi Aldakheel, Chuanwei Zhang, Le Gu, Peter Wriggers
Abstract

The thermal-induced failure mechanism of the bearing outer-ring guiding-surface is investigated within this work when subjected to cyclic impact and sliding actions. The paper combines numerical simulations and experimental analysis. A high-speed bearing oil interruption experiment is carried out for testing the severe damage of the bearing steel at high-speed impact-sliding contacts. A coupled thermo-elasto-plastic phase-field model is established and validated by experimental results. It then allows, by simulating the multi-physics problem, the predictions of damage propagation and failure for ductile materials at cyclic impact-sliding contacts. To this end, a temperature-dependent isotropic-kinematic hardening model combined with thermal softening, cyclic strain hardening, and damage degradation is employed. The results show that under high-speed cyclic impact-sliding conditions, the damage initiated and accumulated at the contact near-surface is accompanied by instantaneous high temperature and plastic deformation. The failure of bearing is induced by a strong thermal softening effect at high-speed sliding and rapidly propagated under cyclic impact loading. In addition, the impact velocity, impact frequency, and friction coefficient have significant effects on damage initiation and accumulation.

Organisationseinheit(en)
Institut für Baumechanik und Numerische Mechanik
Institut für Kontinuumsmechanik
Externe Organisation(en)
Harbin Institute of Technology
Typ
Artikel
Journal
International Journal of Mechanical Sciences
Band
253
ISSN
0020-7403
Publikationsdatum
01.09.2023
Publikationsstatus
Veröffentlicht
Peer-reviewed
Ja
ASJC Scopus Sachgebiete
Tief- und Ingenieurbau, Werkstoffwissenschaften (insg.), Physik der kondensierten Materie, Werkstoffmechanik, Maschinenbau
Elektronische Version(en)
https://doi.org/10.1016/j.ijmecsci.2023.108410 (Zugang: Geschlossen)
 

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