摘要
城轨列车运行线路及运行工况复杂多变,若用传统动力学模型,无法得到更为实用的研究结果。为此,建立六节编组城轨列车动力学模型,综合考虑制动工况以及城轨列车通过高架线路时的桥梁徐变上拱长波不平顺情况,研究在该内外耦合激励下的车辆动力学性能。基于微元法思想,计算了制动工况下阻力转矩与时间历程的关系,得到贴近实际的运行综合工况。研究结果表明:桥梁上拱长波激励对列车安全性有显著影响;因而提出一种综合安全性系数用以评价列车安全性;制动工况下,不同制动缸压力对列车轮对磨耗数及磨耗位置均有一定影响。
The operating lines and conditions of urban rail trains are complex and changeable.If the traditional dynamic model is used,more practical research results cannot be achieved.For this purpose,six-marshalling of the urban rail vehicle dynamics model is established.Considering the braking condition and the creep and arch long wave irregularity of the urban rail train upon passing through the elevated line,the vehicle dynamic performance under the coupling excitation is studied.Based on the idea of the microelement method,the relationship between the resistance torque and the time under the braking condition is calculated,and the comprehensive operating conditions close to the real process are obtained.The research results show that the arch long wave excitation on the bridge has a significant impact on the train safety.Therefore,an ample safety factor is proposed to evaluate the train safety.Under different braking conditions,the brake cylinder pressure has a certain effect on both the wheel wear amount and the wear location.
作者
刘传
杨建伟
王金海
卢宁
LIU Chuan;YANG Jianwei;WANG Jinhai;LU Ning(School of Mechanical-Electronic and Automobile Engineering,Beijing University of Civil Engineering and Architecture,Beijing 100044,China;Beijing Key Laboratory of Performance Guarantee on Urban Rail Transit Vehicles,Beijing University of Civil Engineering and Architecture,Beijing 100044,China;School of Mechanical,Electronic and Control Engineering,Beijing Jiaotong University,Beijing 100044,China)
出处
《中国科技论文》
CAS
北大核心
2018年第10期1106-1112,共7页
China Sciencepaper
基金
国家重点研发计划专项(2016YFB1200402)
国家自然科学基金资助项目(51605023)
北京市教育委员会科技项目(KM201610016017)
关键词
车辆工程
城轨车辆
动力学性能
制动工况
徐变上拱
vehicle engineering
rail cars
dynamic performance
brake condition
concrete creep
