摘要
为揭示表面粗糙度对深沟球轴承弹塑性接触性能的影响,根据该轴承的载荷分布,把滚动体与内滚道接触转变为二次型函数极值问题,并建立考虑表面粗糙度的该轴承弹塑性接触模型,运用半解析法对该模型进行求解,获得了计入表面粗糙度影响的深沟球轴承弹塑性接触性能。数值结果表明:表面粗糙度会使内滚道宽度方向两端处的局部压力减小,同时使内滚道接触压力、von Mises应力、残余应力和残余变形的幅值较光滑情况时增大;同时表面粗糙度导致深沟球轴承中内滚道接触压力和残余变形分布发生波动,易使内滚道次表面产生应力集中,进而影响轴承整体使用寿命。
To reveal the effect of surface roughness on elastopiastic contact performances for a deep groove ball bearing, the contact between the rolling element and inner raceway is reduced as the extremum problem of a quadratic function based on the load distribution of this kind of bearings. The elastoplastic contact model for a rough deep groove bal analytical method so as to obtain the elastop bearing is modeled, and solved with the proposed semi- astic contact performance for the bearing. Numerical results show that the surface roughness yields decrements in the pressure peaks at the two contact endpoints along the inner raceway＇s width direction. Meanwhile, the maximum contact pressure, yon Mises stress, and residual stress and deformation for the inner raceway are all larger than the corresponding values for the smooth situation. Moreover, the roughness also causes fluctuating distributions of contact pressure and residual deformation, and brings out a stress concentration at the inner raceway^s subsurface, which can lead to a decay of the bearing lifetime.
作者
浦超
杜明刚
孟凡明
张青
PU Chao DU Minggang MENG Fanming ZHANG Qing(The State Key Laboratory of Mechanical Transmission, Chongqing University, Chongqing 400044, P.R.China Science and Technology on Vehicle Transmission Laboratory, China North Vehicle Research Institute, Beijing 100072, P.R.China Powertrain Research Institute of Chongqing Changan Automobile Co., Ltd., Chongqing 400023, P.R.China)
出处
《重庆大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2017年第10期12-22,共11页
Journal of Chongqing University
基金
国家自然科学基金资助项目(51775067)
中央高校基本科研业务费专项资金资助项目(106112016CDJZR288805)~~
关键词
弹塑性接触性能
粗糙度
深沟球轴承
半解析法
elastoplastic contact performance
roughness
deep groove ball bearings
semianalytical method
