摘要
利用多体系统动力学软件SIMPACK建立地铁车辆-轨道系统耦合动力学模型,结合轮轨滚动接触疲劳预测模型,分析非对称轨底坡对车辆动力学性能、轮轨磨耗及滚动接触疲劳的影响。研究结果表明:减小外轨侧轨底坡会降低车辆的曲线通过性能,加剧轮轨磨耗,恶化表面疲劳性能;设置非对称轨底坡时,外轨动态响应主要与外轨侧轨底坡有关,受内轨侧轨底坡的影响较小;为减缓外轨磨耗及滚动接触疲劳,建议内轨侧轨底坡采用1/40、外轨侧轨底坡采用1/20。
The coupling dynamic model of metro vehicle and track system was established by using multi-body system dynamics software SIMPACK,and the influence of asymmetric rail cant on vehicle dynamic performance,wheel-rail wear and rolling contact fatigue was analyzed by combing with the prediction model of wheel-rail rolling contact fatigue.The results show that reducing the outer lateral rail cant will decrease the curve passing performance of the vehicle,aggravate the wheel-rail wear,and deteriorate the fatigue performance of the wheel surface,when the asymmetric rail cant is set,the dynamic response of the outer rail is mainly related to the setting of the outer lateral rail cant,which is less affected by the inner lateral rail cant.In order to reduce outer rail wear and rolling contact fatigue,it is recommended to use 1/40 for inner lateral rail cant and 1/20 for outer lateral rail cant.
作者
温静
于浩
陈嵘
WEN Jing;YU Hao;CHEN Rong(Key Laboratory of High Speed Railway Engineering of Ministry of Education,Southwest Jiaotong University,Chengdu 610031,China;School of Civil Engineering,Southwest Jiaotong University,Chengdu 610031,China)
出处
《铁道建筑》
北大核心
2020年第6期144-147,共4页
Railway Engineering
基金
国家重点研发计划(2016YFC0802203-4)
国家自然科学基金(U1734207,51778542)。
关键词
地铁
非对称轨底坡
数值模拟
动力学性能
轮轨磨耗
滚动接触疲劳
metro
asymmetric rail cant
numerical simulation
dynamic performance
wheel-rail wear
rolling contact fatigue
