高速动车组构架横向失稳问题仿真分析与试验验证  

Simulation Analysis and Field Test Verification of Lateral Instability of High-speed EMU Framework

作　　者：王晨[1,2] 罗世辉 许自强[3] 马卫华 董孝卿[3] 邬平波 WANG Chen;LUO Shihui;XU Ziqiang;MA Weihua;DONG Xiaoqing;WU Pingbo(State Key Laboratory of Traction Power, Southwest Jiaotong University, Chengdu 610031, China;School of Mechanical Engineering,Shijiazhuang Tiedao University, Shijiazhuang 050043, China;Locomotive & Car Research Institute, China Academy of Railway Sciences Corporation Limited, Beijing 100081, China)

机构地区：[1]西南交通大学牵引动力国家重点试验室,四川成都610031 [2]石家庄铁道大学机械工程学院,河北石家庄050043 [3]中国铁道科学研究院集团有限公司机车车辆研究所,北京100081

出　　处：《铁道学报》2021年第1期39-48,共10页Journal of the China Railway Society

基　　金：中国国家铁路集团有限公司科技研究开发计划(J2019J002);中国铁路总公司科技研究开发计划(P2018J001-CR400);中国铁道科学研究院基金(2019YJ094,2019YJ162)。

摘　　要：针对某高速铁路上运行的动车组列车出现构架失稳报警问题,对失稳动车组轮对踏面以及失稳区间钢轨磨耗特性进行测量,发现失稳情况动车组踏面出现严重的凹形磨耗,而失稳区间钢轨以轨距角磨耗为主。对现场实测轮轨接触特性进行计算分析,根据动车参数建立车辆动力学仿真模型,分析轮轨磨耗对车辆稳定性的影响。另一方面选择装备典型凹磨踏面,在不同钢轨磨耗情况下对转向架构架振动情况进行现场试验。仿真与试验结果表明:不合理的轮轨匹配关系是造成构架横向报警的主要原因,随着踏面凹磨加剧,轮轨匹配等效锥度的增大导致车辆稳定性降低,构架发生失稳触发构架横向报警,而轨距角磨耗钢轨进一步加剧了构架失稳情况。In view of the detected bogie lateral instability of certain EMU(Electric Multiple Unit)running on a high-speed railway,measurements were made for the profile of the wheelsets of the bogies with detected lateral instability and rail wear characteristics of the unstable section.Hollow wear occurred to the wheelsets of the bogies with detected lateral instability,and the distinct wear around the rail gauge corner was widely found on the rails in the unstable section.Analyses of measurements on wheel-rail contact characteristics were made and simulations were conducted and the EMU dynamics simulation model was established according to the EMU parameters to analyze the impact of the wheel-rail wear on vehicle stability.Typical hollow worn wheel conditions were selected to test their influences on bogie frame dynamics.The simulation and test results show that abnormal wheel-rail wear is the main cause for the lateral bogie instability.The equivalent conicity will increase with the tread wear,and will cause deteriorations of vehicle stability.The bogie instability will cause alarm,and the wears around the rail gauge corner will exacerbate bogie frame instability.

关 键 词：动车组 构架失稳 分岔稳定性 线路试验 轮轨磨耗 

分 类 号：U264.811[机械工程—车辆工程]