车轮扁疤所引起的车辆系统振动特性分析

doi:10.3901/JME.2020.08.182

机械工程学报 ›› 2020, Vol. 56 ›› Issue (8): 182-189.doi: 10.3901/JME.2020.08.182

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车轮扁疤所引起的车辆系统振动特性分析

刘国云^1,2, 曾京¹, 邬平波¹, 朱海燕³, 张波²

1. 西南交通大学牵引动力国家重点实验室成都 610031;
2. 大功率交流传动电力机车系统集成国家重点实验室株洲 412001;
3. 华东交通大学机电与车辆工程学院南昌 330013

收稿日期:2019-04-17 修回日期:2019-05-17 出版日期:2020-04-20 发布日期:2020-05-28
通讯作者: 刘国云(通信作者),男,1989年出生,博士研究生。主要研究方向为车辆系统动力学。E-mail:lgymale@163.com
作者简介:曾京,男,1963年出生,博士,教授。主要研究方向为车辆系统动力学。E-mail:zeng@swjtu.edu.cn
基金资助:
国家重点研发计划（2016YFB1200505）和国家自然科学基金（51665015）资助项目。

Vibration Characteristic Analysis of Vehicle Systems Due to Wheel Flat

LIU Guoyun^1,2, ZENG Jing¹, WU Pingbo¹, ZHU Haiyan³, ZHANG Bo²

1. State Key Laboratory of Traction Power, Southwest Jiaotong University, Chengdu 610031;
2. State Key Laboratory of Heavy Duty AC Drive Electric Locotive Systems Integration, Zhuzhou 412001;
3. School of Mechatronics & Vehicle Engineering, East China Jiaotong University, Nanchang 330013

Received:2019-04-17 Revised:2019-05-17 Online:2020-04-20 Published:2020-05-28

摘要/Abstract

摘要： 车轮扁疤所诱发的轮对弹性变形会导致车辆系统部件振动加速度增大，但目前相关研究主要采取刚体动力学模型。为更准确研究车轮扁疤对高速车辆振动特性的影响，在目前成熟且广泛已知的车辆-轨道耦合模型和车辆系统刚柔耦合模型的基础上，综合考虑车辆主要部件的弹性振动和轨道弹性振动的影响，建立改进的车辆-轨道动力学模型。结果表明，在扁疤作用下，轮对弹性变形对轮轨垂向力影响甚微，但对轴箱端盖垂向振动响应影响很大；扁疤所产生的冲击载荷经过转向架或者钢轨的传递作用，会导致同轴另一侧以及转向架同侧处的轮轨力产生小幅值波动；扁疤所在轮对的左右两个轴箱端盖振动加速度要远大于同一转向架的其他两处；在低速时，车轮扁疤对构架端部垂向振动加速度也有着不可忽视的影响。提出的研究成果揭示了车轮扁疤作用下车辆-轨道系统弹性变形的重要性，对车轮状态监控也具有重要意义。

关键词: 高速车辆, 车轮扁疤, 振动, 刚柔耦合, 动力学

Abstract: The elastic deformation of wheelset caused by wheel flat increases the vibration acceleration of vehicle components, but the rigid body dynamics model is mainly adopted in the the related research at present. In order to study the vibration characteristic of high speed vehicles due to wheel flat more accurately, based on the mature and widely known vehicle-track coupling model and the rigid-flexible coupling model of vehicle system, a corresponding analytical model is improved,where the influences of elastic deformation of main vehicle parts and track are comprehensively considered. The results indicate that the wheel elastic deformation has little effect on wheel/rail vertical force, but has a great influence on axle-box cover vertical vibration in the presence of wheel flat. Through the transfer of bogie or rail, the impact load generated by wheel flat can cause small fluctuation of wheel-rail force on the two wheels, which are on the same wheelset and at the same side of the bogie respectively. Due to wheel flat, the two axle-box cover vibration acceleration at the wheelset with wheel flat is greater than the other two of the same bogie. What is more, the influence of wheel flat on bogie frame end vertical vibration cannot be ignored at low speed. The research results reveal the importance of the elastic deformation of vehicle-track system due to wheel flat, and have great significance for wheelset condition monitoring.

Key words: high-speed vehicle, wheel flat, vibration, rigid-flexible coupling, dynamics

中图分类号:

U211

刘国云, 曾京, 邬平波, 朱海燕, 张波. 车轮扁疤所引起的车辆系统振动特性分析[J]. 机械工程学报, 2020, 56(8): 182-189.

LIU Guoyun, ZENG Jing, WU Pingbo, ZHU Haiyan, ZHANG Bo. Vibration Characteristic Analysis of Vehicle Systems Due to Wheel Flat[J]. Journal of Mechanical Engineering, 2020, 56(8): 182-189.

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车轮扁疤所引起的车辆系统振动特性分析

Vibration Characteristic Analysis of Vehicle Systems Due to Wheel Flat

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