Influence of rail corrugation on dynamic performance of high-speed vehicle-turnout system

被引：1
|
作者：
Li Z. [1 ,2 ]
Yan Z. [1 ,2 ]
Li S. [1 ,2 ]
Xu J. [1 ,2 ]
Wang P. [1 ,2 ]
机构：
[1] MOE Key Laboratory of High-Speed Railway Engineering, Southwest Jiaotong University, Chengdu
[2] School of Aeronautic Science and Engineering, Southwest Jiaotong University, Chengdu
来源：
Zhongnan Daxue Xuebao (Ziran Kexue Ban)/Journal of Central South University (Science and Technology) | 2023年 / 54卷 / 11期
基金：
中国国家自然科学基金;
关键词：
high-speed turnout; rail corrugation; vehicle-turnout coupled rigid and flexible model; wheel load transition; wheel-rail dynamic interaction;
D O I：
10.11817/j.issn.1672-7207.2023.11.036
中图分类号：
学科分类号：
摘要：
In order to study the effect of rail corrugation on the dynamic performance of the high-speed vehicle-turnout system, a rigid-flexible coupling dynamic model of high-speed vehicle-turnout was established. Considering the flexible deformation of multiple rails in the turnout area, the surface corrugation of the rail was described by numerical simulation, and the influence factors such as distribution phase, wavelength, depth of wave and passing speed of rail corrugation were considered. The variation laws of wheel-rail vertical force and the vertical vibration of the vehicle components under the condition of corrugation in the turnout area were emphatically analyzed. The results show that when the rail corrugation is in the phase with the largest time-varying rate of the wave depth at the top width of the switch rail of 40 mm, the wheel-rail vertical force on the switch rail side is the largest. The rail corrugation of the turnout area will shorten the length of the wheel-load transition section. When the wavelength is 150 mm and the wave depth reaches 0.08 mm, the wheel on the side of switch rail is completely reduced in the wheel-load transition section, and the instantaneous wheel-rail separation phenomenon occurs. The maximum value of the wheel-rail vertical force and the vertical vibration acceleration of the vehicle axle box is negatively correlated with the wavelength, and positively correlated with the wave depth and speed. © 2023 Central South University of Technology. All rights reserved.
引用
收藏
页码：4596 / 4609
页数：13
相关论文
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