摘要
虚拟轨道列车作为近年来兴起的一种新型轨道交通制式,融合了中运量轨道交通和快速公交的优势,成为城市公共交通系统中的重要一环。但由于其在结构上自由度较多,在实际运行中存在发生类似半挂车的横摆、折叠、甩尾等横向失稳现象的隐患。通过动力学仿真,研究了铰接系统刚度阻尼对车辆直线行驶稳定性和曲线通过的影响。研究结果表明,在直线行驶工况下,增加铰接刚度至5×10^(4)N/m、阻尼至10^(7)N·s/m可以使车辆零阻尼车速达到81 km/h;在高速变道工况下,增加铰接刚度降低中间车后部放大系数29.9%,后车后部放大系数31.6%;在通过大半径曲线过程中,增加铰接刚度亦可使后轴轨迹偏移量最大值减小21.96%,稳态值减小22.18%;在通过小曲线过程中,增加铰接刚度不会增加轨迹偏移量和轮胎横向力,因此不影响车辆的曲线通过性能。
Virtual rail trains,as a new type of rail transit system that has emerged in recent years,integrate the advantages of medium capacity rail transit and rapid transit,and have become an important part of urban public transportation systems.However,due to its high degree of structural freedom,there is a hidden danger of lateral instability such as sway,folding,and tail swinging similar to that of a semi-trailer during actual operation.The influence of stiffness and damping of the articulated system on the stability of vehicle straight-line driving and curve passing through are studied through dynamic simulation.The research results indicate that under straight driving conditions,increasing the hinge stiffness to 5×10^(4) N/m and damping to 10^(7) N·s/m can achieve a zero damping vehicle speed of 81 km/h.Under high-speed lane changing conditions,increasing the hinge stiffness reduces the amplification factor of the middle car rear by 29.9%and the amplification factor of the rear car rear by 31.6%.During the process of passing through a large radius curve,increasing the hinge stiffness can also reduce the maximum rear axle trajectory offset by 21.96%and the steady-state value by 22.18%.During the process of passing through small curves,increasing the hinge stiffness does not increase the trajectory deviation or tire lateral force,therefore it does not affect the vehicle's curve passing performance.
作者
卢晨旸
季元进
任利惠
Lu Chenyang;Ji Yuanjin;Ren Lihui(Institute of Rail Transit,Tongji University,Shanghai 201804,China)
出处
《机电工程技术》
2025年第4期50-55,共6页
Mechanical & Electrical Engineering Technology
基金
“博士后创新人才支持计划”资助项目(BX20200240)。
关键词
车辆动力学
铰接车辆
虚拟轨道列车
横向稳定性
vehicle dynamics
articulated vehicle
virtual rail train
lateral stability
作者简介
卢晨旸(1997-),男,硕士研究生,研究领域为虚拟轨道列车车辆动力学;任利惠(1970-),男,教授,博士生导师,研究领域为轨道车辆系统动力学、轮轨关系、试验测试技术,已发表论文118篇;通讯作者:季元进(1989-),男,讲师,硕士生导师,研究领域为轨道车辆系统动力学、轮轨关系,已发表论文48篇。
