车轮型面磨耗对车辆服役性能的影响  

Influence of Wear of Wheel Profile on Dynamic Performance of EMU

作　　者：李艳[1] 张卫华[1] 周文祥[1] 

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：《西南交通大学学报》2010年第4期549-554,共6页Journal of Southwest Jiaotong University

基　　金：国家自然科学基金资助项目(50525518);国家973计划项目(2007CB714701);创新研究群体科学基金资助项目(50821063)

摘　　要：针对动车组的1节车辆,利用WP—D车轮外形测量仪定期实测每个车轮的外形与轮径,得到5组车轮型面磨耗工况,并结合所选车辆的结构参数和运行线路特点,利用多体动力学软件进行了车辆动力学仿真,分析了车辆在不同磨耗工况下的动力学特性.仿真结果表明:为保证车辆400 km/h以上的临界速度,车轮等效锥度应不大于0.4;磨耗车轮的型面下凹深度超过2 mm时,车辆运行安全性和曲线通过性能将显著下降,在最恶劣工况时,平稳性指标增幅达54%,轮轴横向力增大了100%.The shapes and diameters of each wheel of an electric multiple unit（EMU） were measured regularly by a WP—D wheel profilometer,and the measured profiles were classified into 5 profile-wear conditions.Dynamic simulations were performed with a multi-body dynamics software to analyze the dynamic performance of the EMU under the 5 profile-wear conditions,in which the structural parameters of the vehicle and the specifications of the railway lines were considered.The simulation results show that the equivalent conicity should not be larger than 0.4 for a critical speed of over 400 km/h,the running safety and curving performance are adversely affected significantly if the wear depth exceeds 2 mm,and there are increases in the sperling index by 54% and in the lateral wheelset force by 100% under the worst profile-wear condition.

关 键 词：车辆动力学 动力学性能 车轮型面 磨耗 动车组 

分 类 号：U260.11[机械工程—车辆工程]