等效锥度对120 km/h地铁车辆横向稳定性影响研究  

Research on Influence of Equivalent Conicity on Lateral Stability of 120 km/h Metro Vehicles

作　　者：李浩 戴焕云[1] 汪群生[1] 彭莘宇 王杰 LI Hao;DAI Huanyun;WANG Qunsheng;PENG Shenyu;WANG Jie(State Key Laboratory of Traction Power,Southwest Jiaotong University,Chengdu,Sichuan 610031,China)

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：《机车电传动》2020年第3期68-72,共5页Electric Drive for Locomotives

基　　金：国家自然科学基金项目(11790282)。

摘　　要：基于目前120 km/h B型地铁车辆在实际运营中出现车轮等效锥度较大的情况,借助Simpack动力学仿真软件,建立车辆多体动力学模型,还原了目前车辆在实际运营中车轮磨耗后出现的异常振动。仿真发现,车辆在车轮等效锥度为0.5时,车体存在因转向架蛇行造成的5.5 Hz振动频率和因车体上心滚摆模态被轨道不平顺激发造成的2.5 Hz振动频率,因此造成车体横向平稳性指标过大。通过对悬挂参数分析发现,适当增大一系横向定位刚度可有效降低车轮等效锥度较大时的车辆横向平稳性指标。Based on the fact that 120 km/h B-type metro vehicles had a large wheel equivalent conicity in actual operation, a multi-body dynamic model of the vehicle was established with Simpack dynamic simulation software, which could restore the abnormal vibration after wheel wear in actual operation. Simulation results showed that when the equivalent conicity of the vehicle was 0.5, the vehicle body had 5.5 Hz vibration frequency caused by bogie hunting and 2.5 Hz vibration frequency caused by the track irregularity excitation of the upper center roll mode of the vehicle body, which resulted into large lateral stability index of the vehicle body. Through the analysis of suspension parameters, it was found that increasing the primary lateral positioning stiffness properly could effectively reduce the vehicle lateral stability index when the equivalent conicity was larger.

关 键 词：地铁车辆 等效锥度 横向稳定性 悬挂参数 仿真 轨道不平顺 

分 类 号：U231[交通运输工程—道路与铁道工程] U260.11[机械工程—车辆工程]