“车体-多边形化车轮-轨道”耦合系统动力分析及多边形车轮识别  

Dynamic Analysis and Out-of-round Wheel Recognition of “Body-out-of-round Wheel-rail” Coupling System

作　　者：雷晓燕[1] 杨天 刘庆杰[1] LEI Xiaoyan;YANG Tian;LIU Qingjie(Railway Noise and Vibration Engineering Research Center of the Ministry of Education, East China Jiaotong University, Nanchang 330013, China)

机构地区：[1]华东交通大学铁路环境振动与噪声教育部工程研究中心,南昌330013

出　　处：《噪声与振动控制》2019年第2期1-6,共6页Noise and Vibration Control

基　　金：国家自然科学基金资助项目(51478184)

摘　　要：列车车轮多边形是铁路车辆中最常见的车轮失圆现象。车轮多边形是车轮在圆周方向出现不均匀变化的现象,会引起轮轨冲击荷载,从而严重影响轨道结构部件的稳定性。基于有限元法建立"车体-多边形化车轮-轨道"模型,利用动力学有限元模型,研究不同波深、车速和多边形阶数对轮轨力及轨道结构动力响应的影响。最后,拟合实测数据获得锯齿波函数,实现多边形车轮的有效识别。The out-of-round wheel of trains is the most common form of fault in railway vehicles. Out-of-round wheel is the phenomenon of irregularity along the circumferential direction of the wheel, which can cause additional wheel-rail impact load and seriously affect the components of track structures. In this paper, the dynamic finite element model of the vehicle' s body, out-of-round wheel and rail coupling system is established, and the influence of speed, different wave depth and the polygon order of the wheel on the dynamic response of the wheel-rail force and the track structure is studied. Finally, by fitting the measured data, a zigzag wave function is obtained and the effective recognition of the out-of-round wheel is achieved.

关 键 词：振动与波 有限元 车轮多边形 轮轨力 冲击荷载 钢轨位移 

分 类 号：O242.21[理学—计算数学] U213.2[理学—数学]