列车车轴-轴承过盈配合面接触应力分析（英文）  

Analysis of contact stress on interference fitted surface of the train axle-bearing

作　　者：曹青松[1] 郭小兵[1] 熊国良[1] 

机构地区：[1]华东交通大学机电工程学院,南昌330013

出　　处：《机床与液压》2015年第24期30-33,共4页Machine Tool & Hydraulics

基　　金：supported by the National Natural Science Foundation of China (No.51265009, No.51265010)

摘　　要：在列车运行过程中,车轴-轴承过盈配合面将发生微动而造成微动损伤,接触应力是影响过盈配合面微动损伤的主要因素之一。以CRH2动车组的车轴和轴承为对象,利用有限元软件ABAQUS建立车轴-轴承过盈配合面的接触模型,研究了过盈量、摩擦系数对接触应力的影响。结果表明:过盈量对配合面接触压力的影响较大,接触应力随着过盈量的增加而增大,且在配合面接触边缘区域产生最大应力,存在应力集中现象;而摩擦系数对配合面接触应力的影响较小。During railway vehicle rolling,the interference fitted surfaces between axle and bearing are worn due to fretting. The contact stress is one of the most important factors influencing micro damage. In this paper,the finite element model of axle-bearing interference fitted surfaces was established by using the finite element software ABAQUS. The influence of interference fit tolerance and friction coefficient on the contact stress was investigated.The results show that the interference fit tolerance has an important effect on the contact stress. The contact stress will be increased with the increasing of interference fit tolerance. The maximum stress appears on the contact edge of the fitted surface and stress concentration phenomenon is observed. Meanwhile,the friction coefficient has negligible effect on the contact stress of the fitted surface.

关 键 词：Axle-bearing  INTERFERENCE FITTING surface  CONTACT stress 

分 类 号：U266.2[机械工程—车辆工程]