摘要
为研究车轮磨耗对高速列车动力学性能的影响,在多体动力学软件中建立CRH380A型动车组模型,采用Archard磨耗理论对车轮踏面进行磨耗预测,并与实测踏面进行对比,结果表明拟合程度较好.通过仿真计算动车组列车在不同运行里程下的动力学性能,得到了该列车的动力学演化过程和规律.结果表明:在车辆镟轮后开始运行,由于存在踏面磨耗,除非线性失稳速度外,脱轨系数和轮重减载率均开始下降;运行3万km后,车辆非线性失稳速度有小幅提升.所建立的模型可以良好的表征出动车组的运行状态和踏面磨耗,为后续车辆的养护维修提供一定的理论支持.
In order to study the effect of wheel wear on the dynamic performance of high-speed trains,the CRH380A EMU model is established by multi-body dynamics software in the paper.The wear prediction of wheel tread is carried out by using the Archard wear theory,and compared with the measured tread,the results show that the fitting degree is good.Through the simulating calculation of the dynamics performance of EMU under different running mileage,the dynamic evolution process and law of the train are obtained.The results show that the derailment coefficient and wheel load reduction rate begin to decrease due to the tread wear,except for the linear instability speed,and the nonlinear instability speed of the vehicle increases slightly after running 30000 km.The model established in this paper can well represent the running state and tread wear of the moving train set,which can provide some theoretical support for the maintenance of subsequent vehicles.
作者
吴天航
邹小春
张军
刘哲
WU Tianhang;ZOU Xiaochun;ZHANG Jun;LIU Zhe(School of Mechanical-Electronic and Vehicle Engineering, Beijing University of Civil Engineering and Architecture,Beijing 100044;Beijing Bullet Train Section of China Railway Beijing Bureau Group Co.Ltd, Beijing 100005)
出处
《北京建筑大学学报》
2020年第2期86-90,共5页
Journal of Beijing University of Civil Engineering and Architecture
基金
国家自然科学基金项目(51775031)。
