变轨距高速列车轮-轴-轨多体接触分析  

Analysis of Wheel-Axle-Rail Multibody Contact ofVariable-gauge High-speed Train

作　　者：周诣 马贺 闫硕 张军 ZHOU Yi;MA He;YAN Shuo;ZHANG Jun(Beijing Key Laboratory of Performance Guarantee on Urban Rail Transit Vehicles/School of Mechanical-Electronic and Vehicle Engineering,Beijing University of Civil Engineering and Architecture,Beijing 100044,China;School of Mechanical and Electrical Engineering,Beijing Institute of Graphic Communication,Beijing 102699,China)

机构地区：[1]北京建筑大学机电与车辆工程学院/城市轨道交通车辆服役性能保障北京市重点实验室,北京100044 [2]北京印刷学院机电工程学院,北京102699

出　　处：《科学技术与工程》2024年第34期14821-14829,共9页Science Technology and Engineering

基　　金：北京市教育委员会科研计划(KM202210016003)。

摘　　要：为研究跨国高速列车变轨距转向架不同位置的接触情况,建立了轮-轴-轨多体接触有限元模型,对比分析轨距、横移量及型面匹配对轮轴、轮轨接触斑与等效应力的影响。结果表明:变轨距转向架中的车轴在运营过程中会产生向上的弯曲,车轮和车轴间的接触面积沿轴向逐渐减小,轮轴间受力不均匀,横移量的改变会进一步影响这一现象;车轮和车轴在间隙配合下产生的轮轴等效应力值比传统转向架在过盈配合下产生的值大,且在轮座外侧端部产生应力集中,在检修维护中需重点关注;不同轮轨型面匹配中标准XP55与两种钢轨的匹配性能较好,为变轨距转向架车轮型面的选型提供参考。In order to study the contact conditions at different positions of variable-gauge bogie of transnational high-speed trains,the wheel-axle-rail multibody contact finite element models were established.The effects of track gauge,lateral displacement,and profile matching on the contact patch and equivalent stress of wheel-axle and wheel-rail were compared and analyzed.It is concluded that upward bending is produced by the axle in the variable gauge bogie during the operation process.The contact area between the wheel and axle is observed to gradually decrease along the axial direction.The force between the wheel and axle is found to be uneven,and this phenomenon is further affected by changes in lateral displacement.A larger value of wheel-axle equivalent stress is produced by the wheel and axle in the clearance fit compared to the traditional bogie under interference fit.Stress concentration,occurring at the outer end of the wheel seat,is identified as needing more attention during maintenance.Better matching performance is provided by standard XP55 and two kinds of rail in different wheel-rail profile matching,offering a reference for the selection of wheel profiles for variable-gauge bogies.

关 键 词：变轨距 型面匹配 多体接触 横移量 有限元分析 

分 类 号：U211.5[交通运输工程—道路与铁道工程]