Numerical study on butterfly wings around inclusion based on damage evolution and semi-analytical method

• Published in: Friction Vol. 10; no. 9; pp. 1335 - 1352
• Main Authors: Zhou, Ye, Zhu, Caichao, Chen, Xiaojin, Ye, Wei
• Format: Journal Article
• Language: English
• Published: Beijing Tsinghua University Press 01.09.2022; Springer Nature B.V; State Key Laboratory of Mechanical Transmissions,Chongqing University,Chongqing 400030,China; College of Aerospace Engineering,Chongqing University,Chongqing 400044,China%State Key Laboratory of Mechanical Transmissions,Chongqing University,Chongqing 400030,China%Chongqing Wangjiang Industrial Co.,Chongqing 400071,China
• Subjects: Bearings; Conjugate gradient method; Continuum damage mechanics; Corrosion and Coatings; Crack initiation; Crack propagation; Damage accumulation; Engineering; Failure; Fatigue failure; Friction; Inclusions; Lubricants & lubrication; Material properties; Mathematical models; Mechanical Engineering; Morphology; Nanotechnology; Physical Chemistry; Research Article; Roller bearings; Stress distribution; Surfaces and Interfaces; Thin Films; Three dimensional analysis; Three dimensional models; Tribology; contact fatigue; butterfly wings; semi-analytical method; damage evolution
• ISSN: 2223-7690; 2223-7704
• DOI: 10.1007/s40544-021-0540-2

Butterfly wings are closely related to the premature failure of rolling element bearings. In this study, butterfly formation is investigated using the developed semi-analytical three-dimensional (3D) contact model incorporating inclusion and material property degradation. The 3D elastic field introduced by inhomogeneous inclusion is solved by using numerical approaches, which include the equivalent inclusion method (EIM) and the conjugate gradient method (CGM). The accumulation of fatigue damage surrounding inclusions is described using continuum damage mechanics. The coupling between the development of the damaged zone and the stress field is considered. The effects of the inclusion properties on the contact status and butterfly formation are discussed in detail. The model provides a potential method for quantifying material defects and fatigue behavior in terms of the deterioration of material properties.