Numerical simulation and experimental comparison of flaw evolution on a bearing raceway: Case of thrust ball bearing

• Published in: Journal of computational design and engineering 2018, 5(4), , pp.427-434
• Main Authors: Toumi, M.Y., Murer, S., Bogard, F., Bolaers, F.
• Format: Article
• Language: English
• Subjects: 기계공학
• ISSN: 2288-5048; 2288-4300; 2288-5048
• DOI: 10.1016/j.jcde.2018.01.004

Bearings are essential elements in the design of rotating machines. In an industrial context, bearing failure can have costly consequences. This paper presents a study of the rolling contact fatigue damage applied to thrust ball bearings. It consists in building a dynamic three-dimensional numerical model of the cyclic shift of a ball on an indented rolling surface, using finite element analysis (FEA). Assessment of the evolution in size of a surface spall as a function of loading cycles is also performed using FEM coupled with fatigue laws. Results are in good agreement with laboratory tests carried out under the same conditions using a fatigue test cell dedicated to ball bearings. This study may improve knowledge about estimating the lifetime of rolling components after onset of a spall using FEA and accounting for structural damage state. Highlights The experimental apparatus and damaged thrust ball bearing are described. We model a portion of the thrust ball bearing featuring a spherical indent. Numerical results in terms of stress field are compared to analytical results from the literature. A fatigue software is used to assess the evolution of spalling size. Good agreement is obtained between experimental test campaigns at different loads and FEA results.