基于机车轮对的新型轴承静态刚度仿真分析  

Static Stiffness Simulation Analysis of New Type Bearing Based on Locomotive Wheelset

作　　者：杨文[1] 石金艳[1] 黄剑锋 董小英[1] YANG Wen;SHI Jinyan;HUANG Jianfeng;DONG Xiaoying(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5期1227-1232,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：轴承的刚度性能对机车车辆的平稳舒适性起着重要作用。弹性复合圆柱滚子轴承是一种改善应力集中和综合性能优良的新型轴承。综合分析机车轮对轴箱的复杂载荷分布,通过Hertz接触理论确定弹性复合圆柱滚子轴承内部的载荷分布。采用有限元方法对弹性复合圆柱滚子轴承和普通圆柱滚子轴承进行分析,通过计算以预负荷和滚动体数量为变量对两种圆柱滚子轴承刚度和最大等效应力的影响。结果表明:弹性复合圆柱滚子轴承和普通圆柱滚子轴承的刚度和最大等效应力随着预负荷的增大而增大;随着滚动体数量的增大刚度增大但最大等效应力减小。综合疲劳破坏考虑弹性复合圆柱滚子轴承较普通圆柱滚子轴承的承载性能具有明显的优势。The stiffness of bearing plays an important role in the comfort of rolling stock.Elastic composite cylindrical roller bearing is a new type of bearing which can improve stress concentration and comprehensive performance.The complex load distribution of locomotive wheelset axle box is analyzed comprehensively,and the load distribution inside elastic composite cylindrical roller bearing is determined by Hertz contact theory.The finite element method is used to analyze the elastic composite cylindrical roller bearing and the ordinary cylindrical roller bearing.The results show that the stiffness and maximum equivalent stress of elastic composite cylindrical roller bearing and ordinary cylindrical roller bearing increase with the increase of preload.The stiffness increases but the maximum equivalent stress decreases with the increase of the number of rolling bodies.Considering comprehensive fatigue failure,elastic composite cylindrical roller bearing has obvious advantages over ordinary cylindrical roller bearing in bearing capacity.

关 键 词：机车轮对轴箱 静态刚度 有限元 

分 类 号：TH133.33[机械工程—机械制造及自动化]