地铁车轮多边形磨耗对轮轨系统动力特性的影响  

Influence of metro wheel polygonal wear on dynamic properties of wheel-rail system

作　　者：刘奇锋 陶功权[2] 梁红琴[1] 卢纯 温泽峰[2] 龙辉 LIU Qifeng;TAO Gongquan;LIANG Hongqin;LU Chun;WEN Zefeng;LONG Hui(School of Mechanical Engineering,Southwest Jiaotong University,Chengdu 610031,China;State Key Laboratory of Traction Power,Southwest Jiaotong University,Chengdu 610031,China)

机构地区：[1]西南交通大学机械工程学院,四川成都610031 [2]西南交通大学牵引动力国家重点实验室,四川成都610031

出　　处：《中南大学学报（自然科学版）》2022年第8期3222-3231,共10页Journal of Central South University:Science and Technology

基　　金：国家自然科学基金资助项目(52002342);四川省科技计划项目(2020YJ0311,2020YFQ0024);中国博士后科学基金资助项目(2020M673281)。

摘　　要：基于ANSYS有限元分析软件和SIMPACK动力学软件建立考虑轨道和轮对柔性的地铁车辆-轨道刚柔耦合动力学模型,以地铁运营过程中常出现的低阶多边形和高阶多边形磨耗作为输入,研究不同速度下车轮多边形磨耗对轮轨系统动力特性的影响规律。研究结果表明:当车轮多边形激振频率在60~95 Hz频段内时,不圆时变率与轴箱垂向加速度之间具有较强的线性相关性;当多边形激振频率在P2共振频率附近时,不圆时变率与轮轨垂向力之间具有较强的线性相关性。在对车轮多边形进行状态监控时,可考虑在一定频段内利用轴箱垂向加速度和轮轨垂向力来评估车轮多边形的磨耗状态。Based on the finite element analysis software ANSYS and the dynamics software SIMPACK, a metro vehicle-track rigid-flexible coupling dynamics model considering the flexibility of the track and wheelset was established. Taking the low-order and high-order wheel polygonal wear that often occurs during subway operation as an input of the dynamics model, the influence of wheel polygonal wear on the dynamic characteristics of the wheel-rail system at different speeds was investigated. The results show that if the excitation frequency of wheel polygonal wear is in the frequency range of 60-95 Hz, there is a strong linear correlation between the time-varying rate of wheel out-of-roundness and the vertical acceleration of the axle box. If the excitation frequency of wheel polygonal wear is near the P2 resonance frequency, there is a strong linear correlation between the time-varying rate of wheel out-of-roundness and the wheel-rail vertical force. When monitoring the status of the wheel polygonal wear, it can be considered to use the vertical acceleration of the axle box and the wheel-rail vertical force to evaluate the wear status of the wheel polygon in a certain frequency range.

关 键 词：车轮多边形 轴箱垂向加速度 轮轨垂向力 不圆时变率 动力特性 

分 类 号：U211.5[交通运输工程—道路与铁道工程]