西南交通大学学报2024，Vol.59Issue(6)：1357-1367,1388,12.DOI:10.3969/j.issn.0258-2724.20220785
基于车轨耦合的地铁车轮多边形形成机理
Formation Mechanism of Metro Wheel Polygonal Based on Vehicle-Track Coupling
摘要
Abstract
Wheel polygonal wear will deteriorate the vibration environment of rail vehicles,lead to resonance fatigue failure of structural components,and seriously threaten driving safety.To study the formation mechanism of wheel polygonal wear of metro vehicles,the dynamic line tracking test was carried out,and the vertical coupling finite element model and dynamics model of the track were established.In addition,the iterative simulation analysis of long-term wheel-track wear was carried out.The results show that the wheel polygonal wear of 7-9th order occurs in the measured vehicle,which leads to the forced vibration of 50-70 Hz,and the frequency is close to that of the P2 force during the coupling vibration of the wheel-track system.Through the iterative simulation analysis of wheel wear,it is determined that P2 force resonance of the wheel-rail system caused by periodic irregular rail joint weld is the root cause of the 7th-9th order wheel polygonal wear.Under the long-term action of P2 force,the floating slab track bed and the ladder sleeper track bed of steel spring will cause 8th and 15th order wheel polygonal wear,respectively.关键词
地铁车辆/车轮多边形/车轨耦合/磨耗模型/车辆动力学Key words
metro vehicle/wheel polygon/vehicle-track coupling/wear model/vehicle dynamics分类
交通工程引用本文复制引用
施以旋,戴焕云,毛庆洲,石怀龙,汪群生..基于车轨耦合的地铁车轮多边形形成机理[J].西南交通大学学报,2024,59(6):1357-1367,1388,12.基金项目
国家自然科学基金项目(51975485,52272406,52102441) （51975485,52272406,52102441）
中国博士后科学基金(2023TQ0253) （2023TQ0253）
