轮对运动状态对轮轨滚动接触应力的影响  

EFFECT OF WHEELSET MOTIONS ON THE ROLLING CONTACT STRESSES OF WHEEL AND RAIL

作　　者：金学松[1] 温泽峰[1] 张卫华[1] 

机构地区：[1]西南交通大学牵引动力国家重点实验室,四川成都610031

出　　处：《工程力学》2004年第1期165-173,共9页Engineering Mechanics

基　　金：国家自然科学基金重点项目(59935100);高等学校全国优秀博士论文作者专项基金

摘　　要：分析计算了锥型踏面轮对沿轨道滚动接触时轮轨接触几何参数和不同运动状态下的轮轨之间的刚性蠕滑率。根据确定的轮轨接触几何参数和轮轨接触界面之间的蠕滑率,利用非Hertz滚动接触理论分析计算了锥型轮对和钢轨滚动接触斑作用力的分布。再利用弹性力学中Bossinesq-Cerruti力/位移计算公式并借助Gauss数值积分方法,确定了轮轨滚动接触时体内的弹性位移、应变和应力随轮对运动状态变化情况。数据结果为轮轨强度设计提供了重要的参考依据。The contact geometry parameters and rigid creepages of wheelset and track in rolling contact are analyzed. The rolling contact theory of three-dimensional elastic bodies with non-Hertz form is utilized to determine the normal pressure and tangential traction on the contact surface of wheels and rails in rolling contact. Various motion states of the wheelset relative to a tangent track are considered. Taking the normal pressure and tangential traction on the contact surface as prescribed boundary condition, the fields of stress, strain and elastic displacement in the bodies of wheel and rail are calculated with Bossinesq-Cerruti force/displacement formulae and Gaussian quadratare. The results are useful information for the strength design of wheel and rail systems.

关 键 词：轮轨 滚动接触 蠕滑率 蠕滑力 接触斑 应力 应变 数值积分 

分 类 号：U211.5[交通运输工程—道路与铁道工程] O343.3[理学—固体力学]