基于机车轮对的新型滚动轴承弯曲应力分析  

Bending Stress Analysis of New Rolling Bearing Based on Locomotive Wheelset

作　　者：杨文[1] 石金艳[1] YANG Wen;SHI Jinyan(School of Rail Transportation Equipment Intelligent Manufacturing,Hunan Railway Professional Technology College,Zhuzhou 412001)

机构地区：[1]湖南铁道职业技术学院轨道交通装备智能制造学院,株洲412001

出　　处：《计算机与数字工程》2020年第7期1784-1789,共6页Computer & Digital Engineering

基　　金：国家自然科学基金项目(编号:51175168);湖南省教育厅优秀青年项目(编号:17B178)资助。

摘　　要：弹性复合圆柱滚子轴承应用于机车轮对能有效改善其综合性能。弯曲疲劳失效是弹性复合圆柱滚子轴承的一种常见的失效形式。通过分析机车轮对轴箱载荷分布,采用Hertz接触理论确定轴承内部的载荷分布。通过数值分析方法对机车轮对进行整体有限元计算,再局部分析滚动体的内壁应力情况,通过对比弹性复合圆柱滚动体和空心圆柱滚动体的内壁弯曲应力情况,结果表明:在机车轮对复杂的载荷下,弹性复合圆柱滚动体的内壁弯曲应力较空心圆柱滚动体小,其弯曲疲劳强度具有明显的优势。The application of elastic composite cylindrical roller bearing to locomotive wheelset can effectively improve its comprehensive performance.Bending fatigue failure is a common failure form of elastic composite cylindrical roller bearings.By analyzing the load distribution of locomotive wheelset axle box,Hertz contact theory is adopted to determine the load distribution inside the bearing.Through the numerical analysis method,the overall finite element calculation of the locomotive wheel pair is carried out,and the stress of the inner wall of the rolling element is analyzed locally,by comparing the elastic composite cylindrical roller and bending stress in the inner wall of the hollow cylindrical roller,the results show that in the locomotive wheel under the complex load,elastic composite cylindrical wall bending stress of the hollow cylindrical roller rolling body is small,the bending fatigue strength has obvious advantages.

关 键 词：机车轮对轴箱 弯曲应力 有限元 

分 类 号：TH133.33[机械工程—机械制造及自动化]