计入粗糙度的深沟球轴承弹塑性接触性能分析

发布时间：2017-12-30 21:09

本文关键词：计入粗糙度的深沟球轴承弹塑性接触性能分析　出处：《重庆大学学报》2017年10期 　论文类型：期刊论文

【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。
[Abstract]:In order to reveal the influence of surface roughness on the elastoplastic contact performance of deep groove ball bearings, the contact between the rolling body and the inner raceway was transformed into the quadratic function extremum according to the load distribution of the bearing. The elastoplastic contact model of bearing considering surface roughness is established, and the semi-analytical method is used to solve the model. The elastoplastic contact performance of deep groove ball bearing with the effect of surface roughness is obtained. The numerical results show that the surface roughness can reduce the local pressure at both ends of the inner raceway width and at the same time make the inner raceway contact pressure. The amplitude of von Mises stress, residual stress and residual deformation is larger than that of smooth case. At the same time the surface roughness causes the fluctuation of the inner raceway contact pressure and the residual deformation distribution in the deep groove ball bearing which easily causes the stress concentration on the subsurface of the inner raceway and thus affects the whole service life of the bearing.
【作者单位】：重庆大学机械传动国家重点实验室;中国北方车辆研究所车辆传动重点实验室;重庆长安汽车股份有限公司动力研究院;
【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)~~
【分类号】：TH133.3
【正文快照】： 3.重庆长安汽车股份有限公司动力研究院,重庆400023)深沟球轴承广泛应用于航天、高铁和矿山机械等装备中。在大载荷作用下,该类轴承会处于贫油状态,甚至会出现滚动体与滚道直接接触,进一步影响轴承的使用寿命。因此研究该类轴承的接触性能具有重要的工程意义。长期以来,人们对

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