重载铁路货车轴承统计接触模型应用  

Application of Statistic Contact Model for Heavy Load Railway Freight Bearings

作　　者：朱爱华[1] 朱成九[2] 

机构地区：[1]华东交通大学机电工程学院,南昌330013 [2]华东交通大学土木建筑学院,南昌330013

出　　处：《轴承》2013年第12期29-32,共4页Bearing

基　　金：载运工具与装备教育部重点实验室项目(09111054);江西省教育厅科研项目(GJJ10466);西南交通大学牵引动力国家重点实验室开放课题(TPL1112)

摘　　要：以353130B轴承为例,借助ANSYS软件,基于统计学和有限元理论建立了一个考虑轴承零件表面粗糙度影响的有限元统计接触模型。通过该模型研究其接触面积和第三主应力特征得到：对于较低压力作用下0~0.2正偏斜度的表面和较高压力作用下0.2左右的正偏斜度表面,实际接触面积均较小。驼峰度对实际接触面积的影响大于偏斜度的影响。实际接触面积随驼峰度的增大而减小,第三主应力则随之增大。当偏斜度为正值时,随偏斜度增加,实际接触面积增大,第三主应力减小;当偏斜度为负值时,随偏斜度减小实际接触面积增大,第三主应力减小。Taking the bearing 353130B as an example,with the aid of ANSYS software,the finite element statistic contact model considering the effect of surface roughness of bearings parts is built based on statistics and finite element theory,and the characteristics of the contact area and the third principal stress are studied with the model. The following conclusions are obtained： a surface with positive skewness between 0 ~ 0. 2 under lower pressures and of about 0. 2 under higher pressures,results in lower real contact area. The effect of kurtosis is greater than skewness on real contact area. The real contact area decreases with increase in kurtosis,but the third principal stress increases. When the skewness is positive,the real contact area increases,and the third principal stress decreases with the increase of skewness;when the skewness is negative,the real contact area increases,and the third principal stress decreases with the decrease of skewness.

关 键 词：滚动轴承 铁路货车轴承 表面粗糙度 ANSYS 统计参数 

分 类 号：TH133.33[机械工程—机械制造及自动化]