摘要
为研究车轮多边形磨耗对轮轨接触蠕滑特性的影响,依据多体动力学理论和滚动接触理论,建立基于地铁列车参数的多体动力学模型,并计算多工况下车轮踏面磨耗指数,分析车轮多边形阶数和幅值变化对轮轨力、蠕滑率和蠕滑力等特性的影响,结果表明:蠕滑率以及蠕滑力会随车轮多边形阶数和幅值的上升而增大;车轮踏面磨耗随地铁列车运行里程的增加而逐步增大。使用轮轨垂向力指标,根据车速小于160 km/h,轮轨力应不大于200 kN的标准,确定地铁列车80 km/h运行速度下3~23阶多边形幅值安全限值,结果表明多边形幅值安全限值随阶数增加呈下降趋势。
In order to study the influence of wheel polygon abrasion on the contact creep characteristics of wheel and rail,based on the multi-body dynamics theory and rolling contact theory,a multi-body dynamic model based on subway train parameters is established,and the wheel tread wear index under multi working conditions is calculated,and the influence of the order and amplitude of wheel polygon on the wheel rail force,creep slip rate and creep force of high-speed train is analyzed.The results show that the creep rate and creep force will increase with the increase of polygon order and amplitude of wheel,and the wheel tread wear increases with the increase of train mileage.According to the standard of wheel rail vertical force index,according to the standard that the speed is less than 160 km/h and the wheel rail force should not be greater than 200 kN,the safety limit of polygon amplitude of 3-23 orders is determined under 80 km/h running speed of train.The results show that the safety limit of polygon amplitude decreases with the increase of order.
作者
杨岗
吴欣洲
YANG Gang;WU Xinzhou(School of Mechanical Engineering,Southwest Jiaotong University,Chengdu 610031,China)
出处
《中国测试》
CAS
北大核心
2024年第1期106-112,共7页
China Measurement & Test
基金
国家重点研发计划(2020YFB1200300ZL)
四川省科技计划资助(2022YFG0088)。
