• CN:11-2187/TH
  • ISSN:0577-6686

机械工程学报 ›› 2025, Vol. 61 ›› Issue (8): 240-249.doi: 10.3901/JME.2025.08.240

• 运载工程 • 上一篇    

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地铁弹性车轮对钢轨波磨段扣件弹条的减振作用

付昊宁, 关庆华, 王鹏, 温泽峰   

  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:2024-08-19 修回日期:2024-12-17 发布日期:2025-05-10
  • 作者简介:付昊宁,男,2000年出生。主要研究方向为车辆轨道动力学。E-mail:1194427620@qq.com;关庆华(通信作者),男,1981年出生,博士。主要研究方向为车辆轨道动力学与轮轨关系。E-mail:guan_qh@163.com
  • 基金资助:
    国家自然科学基金(52475139, 51935002)和四川省科技计划(2023NSFSC0399)资助项目。

Vibration Damping of Subway Resilient Wheel on Fastening Clips in Rail Corrugation Section

FU Haoning, GUAN Qinghua, WANG Peng, WEN Zefeng   

  1. State Key Laboratory of Rail Transit Vehicle System, Southwest Jiaotong University, Chengdu 610031
  • Received:2024-08-19 Revised:2024-12-17 Published:2025-05-10

摘要: 短波长钢轨波磨激发地铁钢轨扣件弹条共振是造成弹条疲劳断裂的重要原因。地铁弹性车轮是一种新型减振车轮,其对扣件弹条的减振效果尚不明确。基于轮-轨-扣件有限元模型与线性疲劳累积损伤理论,结合现场测试,研究分析地铁弹性车轮对钢轨波磨段扣件弹条的减振作用。结果表明,在速度70 km/h、波磨波长31.5 mm工况下,弹性车轮通过时弹条的振动加速度比普通车轮通过时减小约50%;弹性车轮减弱了钢轨波磨引起的轮轨冲击能量,是弹性车轮对弹条起到减振作用的重要原因;在地铁短波长钢轨波磨段,相比于普通车轮,弹性车轮通过时弹条的疲劳寿命提升了约3.75倍,有效降低弹条的疲劳损伤。研究结果为弹性车轮优化设计及地铁轨道运维提供科学参考。

关键词: 弹性车轮, 短波长磨耗, 扣件弹条, 共振, 疲劳失效

Abstract: The resonance of the fastening clips stimulated by the short-wavelength rail corrugation is an important cause of the fatigue fracture of the fastening clips in subway track. The resilient wheel is a new type of vibration damping wheel, and its damping effect on the fastening clips is not clear. Based on the finite element model of wheel-rail-fastener and the linear theory of cumulative fatigue damage in conjunction with field tests, the vibration damping effect of subway resilient wheels on fasteners in the corrugated section is investigated. The results show that the vibration acceleration of fastening clips is reduced by about 50% compared with the conventional wheel when the resilient wheel rolls over a corrugated rail with wavelength of 31.5 mm and at a speed of 70 km/h. The resilient wheel reduces the wheel-rail impact energy caused by rail corrugation, which is an important reason for the vibration damping effect of the fastening clips when the resilient wheel is used. For the short-wavelength corrugation section of the subway, the fatigue life of the fastening clips when using the resilient wheel is increased by about 375% than that when using the conventional wheel, which can effectively reduce the fatigue damage of the fastening clips. The research results provide scientific support for the optimization design of the resilient wheel and the maintenance of subway track.

Key words: resilient wheel, short wave-length corrugation, fastening clips, resonance, fatigue failure

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