牵引与桥梁上拱激励下城轨列车动力学性能研究  

Research on Dynamic of Urban Rail Vehicle of Variable Speed and Long-wave Excitation Conditions

作　　者：杨建伟[1,2] 刘传 王金海[1,2,3] 孙冉 祝赫锴[1,2] YANG Jianwei;LIU Chuan;WANG Jinhai;SUN Ran;ZHU Hekai(Beijing Key Laboratory of Performance Guarantee on Urban Rail Transit Vehicles,Beijing University of Civil Engineering and Architecture,Beijing 100044;School of Mechanical-electronic and Automobile Engineering,Beijing University of Civil Engineering and Architecture,Beijing 100044;School of Mechanical,Electronic and Control Engineering,Beijing Jiaotong University,Beijing 100044)

机构地区：[1]北京建筑大学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]北京建筑大学机电与车辆工程学院,北京100044 [3]北京交通大学机械与电子控制工程学院,北京100044

出　　处：《机械工程学报》2019年第4期118-125,共8页Journal of Mechanical Engineering

基　　金：国家重点研发计划课题资助项目(2016YFB1200402)

摘　　要：城轨列车的实时变速工况是极为普遍的运行状态,若仅以匀速工况替代,无法得到贴近实际的研究结论。为此,提出一种新的考虑内外耦合激励的动力学模型。建立单节车体模型及编组城轨列车模型,综合考虑牵引工况以及城轨列车通过高架线路时的桥梁徐变上拱长波不平顺,研究在该内外耦合激励下的车辆动力学性能。基于微元法思想,计算得到城轨列车牵引工况下的电机转矩及基本阻力转矩与运行时间的关系,得到合理的综合工况下的运行状态。研究结果表明,在变速工况下车辆的轮对磨耗数、垂向平稳性指标及轮重减载率均有所上升;在桥梁长波不平顺激励下,车辆垂向平稳性指标有所下降、轮重减载率升高,而对车辆横向平稳性指标影响较小。Real-time variable speed conditions of urban rail trains are extremely common operating conditions,if only to uniform conditions instead,it cannot get a satisfactory conclusion. To this end,a new dynamic model considering coupled internal and external excitation is proposed. Based on the traction condition and the bridge creep on the elevated rail line,the vehicle dynamics performance under the coupling of the internal and external are studied. Based on the idea of micro-element method,the relationship between the torque and the running torque of the traction condition of the city rail is calculated,and the running condition is obtained under the reasonable comprehensive condition. The results show that the number of wheel wear and the vertical stability of the vehicle are increasing under the variable speed condition. Under the long wave irregularity of the bridge,the vertical stability index of the vehicle decreases,while the lateral stability Indicators have less impact.

关 键 词：城轨列车 变速工况 徐变上拱 动力学性能 

分 类 号：U270[机械工程—车辆工程]