• CN:11-2187/TH
  • ISSN:0577-6686

机械工程学报 ›› 2024, Vol. 60 ›› Issue (20): 208-216.doi: 10.3901/JME.2024.20.208

• 运载工程 • 上一篇    下一篇

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有轨电车车体垂向异常振动特性及成因分析

汪群生, 曾京, 魏来, 蒋雪松, 陈绍强   

  1. 西南交通大学轨道交通运载系统全国重点实验室 成都 610031
  • 收稿日期:2023-10-23 修回日期:2024-08-05 出版日期:2024-10-20 发布日期:2024-11-30
  • 通讯作者: 汪群生,男,1990年出生,博士,助理研究员,硕士研究生导师。主要研究方向为车辆系统动力学。E-mail:wangqunsheng@126.com
  • 作者简介:曾京,男,1964年出生,博士,教授,博士研究生导师。主要研究方向为车辆系统动力学。E-mail:zeng@swjtu.edu.cn;魏来,男,1989年出生,博士,助理研究员。主要研究方向为车辆系统动力学。E-mail:future@swjtu.edu.cn;蒋雪松,男,1997年出生,硕士研究生。主要研究方向为车辆系统动力学。E-mail:2541518592@qq.com;陈绍强,男,1999年出生,硕士研究生。主要研究方向为车辆系统动力学。E-mail:csq_2021@163.com
  • 基金资助:
    国家自然科学基金(52102441,U2034210);四川省自然科学基金(2022 NSFSC1886)和牵引动力国家重点实验室自主课题(2022TPL-T10)资助项目。

Analysis on Carbody Vertical Abnormal Vibration Characteristics and Causes of Light Rail Transit

WANG Qunsheng, ZENG Jing, WEI Lai, JIANG Xuesong, CHEN Shaoqiang   

  1. State Key Laboratory of Rail Transit Vehicle System, Southwest Jiaotong University, Chengdu 610031
  • Received:2023-10-23 Revised:2024-08-05 Online:2024-10-20 Published:2024-11-30

摘要: 有轨电车在运营过程中出现车体垂向异常振动现象,严重影响旅客乘坐舒适性,针对该问题通过线路测试、理论分析和仿真再现等途径,研究有轨电车车体垂向振动特性,并阐明异常振动的形成原因。研究结果表明,车体垂向振动主频7.5 Hz是造成有轨电车平稳性指标恶化的主要原因,列车呈现为中间拖车上下浮沉运动、相邻车反向点头的模态振型;弹性铰纵向刚度对车体点头频率影响明显,转向架二系垂向刚度和车体重心纵向偏移的影响较小,初步成因判断是车铰刚度实际刚度过小;实测的弹性铰纵向刚度为11.87 MN/m,远小于设计值,基于实测数据的仿真模型再现了车体垂向异常振动现象,验证了弹性铰纵向刚度过小是导致有轨电车异常振动的根本原因。相关研究为有轨电车异常振动问题的解决和性能提升提供技术支撑。

关键词: 有轨电车, 异常振动, 列车模态振型, 试验研究, 成因分析

Abstract: Carbody vertical abnormal vibration of light rail transit during operation seriously impact the passengers’ ride comfort. To address this issue, carbody vertical vibration characteristics of light rail transit is studied through field test, theoretical analysis and simulation reproduction and the causes of abnormal vibration are clarified. The results show that the carbody vertical vibration frequency with 7.5 Hz is the main reason for the deterioration of the light rail transit ride comfort. The trailer of the light rail transit exhibits a vibration mode of floating up and down, while the adjacent vehicles pitch in the opposite direction. The frequency of carbody pitching motion is significantly affected by the longitudinal stiffness of the elastic articulation, while the secondary vertical stiffness of the bogie and the longitudinal deviation from carbody gravity to the bogie have a minor impact. The insufficient stiffness of the elastic articulation is the preliminary cause, with a measured hinge stiffness of 11.87 MN/m, which is far below the design value. A simulation model based on the measured data reproduces the carbody abnormal vibration and confirms that the insufficient longitudinal stiffness of the elastic articulation is the root cause. This relevant research provides technical support for addressing abnormal vibration problems and enhancing the performance of light rail transit.

Key words: light rail transit, abnormal vibration, vibration mode, field test, cause analysis

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