摘要
针对车轮多边形磨耗不同状态下对车辆动力学影响展开研究,建立轮轨柔性某地铁B型车辆刚柔耦合动力学模型,计算车轮多边形阶数和谐波幅值变化对轮轨垂向力、轮轨振动、运行平稳性等车辆动力学性能的影响。结果表明:阶数和谐波幅值在速度增大时轮轨垂向力逐渐增大;阶数14阶、18阶是轮对和轴箱振动加速度随谐波幅值变化产生振动的主要诱因;动力学指标中轮重减载率在18阶、0.04 mm时对其影响最大;车轮多边形使钢轨垂向动位移和振动加速度增大,谐波幅值对钢轨振动特性更有影响。建议考虑制造轮轨柔性,18阶、0.04 mm时对轮轨璇修打磨,以提高动力学性能和行车安全性。
The influence of wheel polygon wear on vehicle dynamics in different states was studied.The rigid-flexible coupling dynamics model of a metro B-type vehicle with wheel-rail flexibility was established,and the influence of the harmonic wave amplitude of wheel polygon order on the vehicle dynamics performance such as wheel-rail vertical force,wheel-rail vibration and running stability was calculated.The results show that the vertical force of the wheel and rail increases gradually with the increase of the amplitude of order harmony wave.The order 14 and 18 is the main cause of vibration of wheelset and axle box with harmonic amplitude change.Among the kinetic indexes,the load shedding ratio of wheel weight displays the greatest effect at 18 order and 0.04 mm.The wheel polygon increases the vertical dynamic displacement and vibration acceleration of rail,and the harmonic amplitude has more influence on the vibration characteristics of rail.It is suggested that flexible wheel and rail be manufactured and the wheel and rail at 18 steps and 0.04 mm be repaired and polished so as to improve the dynamic performance and traffic safety.
作者
杨鹏军
李雪
蒲高
关红艳
YANG Pengjun;LI Xue;PU Gao;GUAN Hongyan(School of Mechanical Engineering,Lanzhou Jiaotong University,Lanzhou 730070,China;Chengdu Metro Operation Co.,Ltd.,Chengdu 610066,China)
出处
《机械制造与自动化》
2024年第1期33-39,共7页
Machine Building & Automation
基金
甘肃省自然科学基金项目(21JR7RA302)。
关键词
车轮多边形
刚柔耦合
动力学性能
磨耗参数
振动
wheel polygon
rigid-flexible coupling
dynamic performance
wear parameters
vibration
