弹性车轮对地铁直线段轨道减振特性研究

doi:10.3901/JME.2022.22.395

机械工程学报 ›› 2022, Vol. 58 ›› Issue (22): 395-405.doi: 10.3901/JME.2022.22.395

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弹性车轮对地铁直线段轨道减振特性研究

邬奇睿¹, 祁孟盂², 周信^1,2, 王安斌¹

1. 上海工程技术大学城市轨道交通学院上海 201620;
2. 西南交通大学牵引动力国家重点试验室成都 610031

收稿日期:2021-11-21 修回日期:2022-03-25 出版日期:2022-11-20 发布日期:2023-02-07
通讯作者: 王安斌(通信作者),男,1961年出生,博士,教授,博士研究生导师。主要研究方向为振动噪声控制。E-mail:wangab725@163.com
作者简介:邬奇睿,男,1997年出生。主要研究方向为振动噪声控制。E-mail:623588173@qq.com
基金资助:
中国国家铁路集团科技开发(L2021G005)资助项目

Research on Vibration Reduction Characteristics of Straight Section of Metro Track with Damping Wheel

WU Qi-rui¹, QI Meng-yu², ZHOU Xin^1,2, WANG An-bin¹

1. School of Urban Railway Transportation, Shanghai University of Engineering Science;
2. State Key Laboratory of Traction Power, Southwest Jiaotong University, Chengdu 610031

Received:2021-11-21 Revised:2022-03-25 Online:2022-11-20 Published:2023-02-07

摘要/Abstract

摘要： 为了评估弹性车轮在地铁直线电机线路的减振效果,结合试验与仿真分别对直线段正常工况与极端工况下弹性车轮减振特性进行研究。现场试验获取了直线段正常工况下轨道和隧道壁的振动水平,试验结果表明,弹性车轮对正常工况下的直线轨道系统的振动有一定的抑制作用,减振量可达2~3dB,同时对车轮多边形冲击振动有明显的减振效果。为了进一步探究对轨道存在钢轨波浪形磨耗或钢轨焊接接头几何缺陷的极端工况下弹性车轮的减振效果,建立车辆-轨道耦合动力学模型,将弹性轮对解耦为轮芯、左轮辋和右轮辋,采用6个自由度建模,轮芯与轮辋间通过弹性橡胶层耦合连接。模拟弹性车轮通过有波磨和焊接接头的钢轨时的振动特性,其数值仿真结果表明,在极端工况下,弹性车轮减振效果可达4~7dB,弹性车轮减振效果随着车辆速度的增加更加显著。

关键词: 地铁直线轨道, 弹性车轮, 动力学特性, 现场试验, 减振

Abstract: A study on the vibration reduction characteristics of damping wheel operating on the straight section is carried out using linear motors vehicles under normal and bad wheel/rail conditions through field experiment and numerical simulation. The field test obtains the vibration characteristics of the track components and the tunnel wall under the normal conditions. The test results show that the damping wheel has a good suppression effect on the vibration of the track infrastructure, and its damping effect can reach up to 2-3 dB vibration reduction. The damping wheel also has a good vibration damping effect on the wheel polygonal impact vibration.Since then, in order to further explore the vibration reduction effect of the damping wheel in the extreme conditions(geometric defects of welded rail joint and rail corrugation), a vehicle-track coupling dynamics model is established to numerically simulate the vibration characteristics of the track parts and the tunnel wall when the train with the damping wheels passes through the rails with the welded joint geometry and the corrugation. In the model, the damping wheels is considered to be composed of three parts: wheel core, left rim and right rim, each of which is taken into account 6 degrees of freedom, and the core and rim are connected by using pressing rubber layer. The simulation results show that the damping wheel has a better vibration reduction effect on the rail in the situation of serious geometric defects at rail welded joint and serious rail corrugation, and its damping effect can reach up to 4-7 dB. in which the higher the running speed, the more obvious the vibration reduction effect is.

Key words: straight metro track, damping wheel, dynamic characteristics, field test, vibration reduction

中图分类号:

U270

邬奇睿, 祁孟盂, 周信, 王安斌. 弹性车轮对地铁直线段轨道减振特性研究[J]. 机械工程学报, 2022, 58(22): 395-405.

WU Qi-rui, QI Meng-yu, ZHOU Xin, WANG An-bin. Research on Vibration Reduction Characteristics of Straight Section of Metro Track with Damping Wheel[J]. Journal of Mechanical Engineering, 2022, 58(22): 395-405.

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弹性车轮对地铁直线段轨道减振特性研究

Research on Vibration Reduction Characteristics of Straight Section of Metro Track with Damping Wheel

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