A non-Hertzian contact analysis for the ball and raceway of a deep groove ball bearing

2018 6th International Conference on Mechanical Engineering, Materials Science and Civil Engineering

材料科学;机械制造;土木建筑工程

Xi, Qiang^1 ; Pi, Yangjun^1 ; Hu, Yumei^1

Chongqing University, 174 shazheng street, shapingba district, Chongqing

400044, China^1

关键词: Bearing clearance;    Contact surface;    Elastic-Plastic;    Elastoplastic contact;    Failure mechanism;    Hertzian contact analysis;    Maximum stress;    Three dimensional finite element simulation;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/542/1/012025/pdf
DOI  :  10.1088/1757-899X/542/1/012025

来源: IOP

【 摘 要 】

Aiming at the premature damage of deep groove ball bearings, considering axial load, elastic-plastic constitutive, coordinated contact and bearing clearance and so on, a non-Hertzian elasto-plastic contact analysis for the bearing ball and the raceway is performed by trans-scale three-dimensional finite element simulation. The results shown that the failure mechanism of the bearing is extremely similar to the L-P fatigue life theory. The effects of load magnitude and direction on contact state were further studied. It indicates that a certain angle of load is beneficial to reduce the maximum internal stress of the bearing, but the angle should not be too large. Besides, increasing the load magnitude results in an increase in the stress value and the depth of maximum stress, but when the load is too heavy, the area that touches the contact surface will be damaged firstly and quickly.