水平轮垂向刚度对跨坐式单轨车辆曲线通过性能影响的仿真分析  

Simulation Analysis of Influence of Horizontal Wheel Vertical Stiffness on Curve Passing Performance of Straddle Monorail Vehicle

作　　者：肖乾 王迪 周生通 彭俊江 XIAO Qian;WANG Di;ZHOU Shengtong;PENG Junjiang(Key Laboratory of vehicle operation engineering of Ministry of Education,East China Jiaotong University,330013,Nanchang,China)

机构地区：[1]华东交通大学载运工具与装备教育部重点实验室,南昌330013

出　　处：《城市轨道交通研究》2021年第6期65-70,共6页Urban Mass Transit

基　　金：江西省杰出青年人才资助计划(20171BCB23058);江西省自然科学基金重点项目(20181ACB20007)。

摘　　要：基于多体动力学理论,利用UM建立了跨坐式单轨车辆动力学模型。在轨道参数和车辆运行速度不变的情况下,仿真分析了不同水平轮垂向刚度下的单轨车辆曲线通过性能评价指标。仿真计算结果表明:在水平轮垂向刚度变化范围内,车体振动加速度和平稳性指标均满足国家相关标准要求,且评定等级均达优;随着水平轮垂向刚度的增大,车辆的曲线通过性能明显转好,但车辆的平稳性指标和振动加速度却逐渐增大,使乘客乘坐舒适度有所下降;当水平轮垂向刚度增大到一定程度时,车辆的曲线通过性能受其影响变小。Based on multi-body dynamics theory,a straddle monorail vehicle dynamics model is established by UM.Under condition that the track parameters and vehicle running speed remain unchanged,the evaluation indexes of curve passing performance of straddle monorail vehicle are simulated and analyzed by changing the size of horizontal wheel vertical stiffness.Results show that within the change range of vertical stiffness of horizontal wheels,the vibration acceleration and ride stability indexes of the vehicle body all meet the relevant national standards,and the evaluation grades are all excellent.With the increase of horizontal wheel vertical stiffness,the vehicle curve passing performance becomes better,however,the vehicle vibration acceleration and stationary index gradually increased,making ride comfort declined.When the vertical stiffness of horizontal wheel increases to a certain extent,the vehicle′s curve passing performance is less affected.

关 键 词：跨坐式单轨车辆 曲线通过性能 水平轮 垂向刚度 仿真分析 

分 类 号：U232[交通运输工程—道路与铁道工程] U271.92[机械工程—车辆工程]