高速客车悬挂参数对临界速度的影响研究  

Study on the Influence of Suspension Parameters of High Speed Train on Critical Speed

作　　者：王康 Wang Kang(Institute of Railway and Urban Rail Transit, Tongji University, Shanghai 201800, China)

机构地区：[1]同济大学铁道与城市轨道交通研究院

出　　处：《宁夏大学学报（自然科学版）》2019年第2期137-140,共4页Journal of Ningxia University(Natural Science Edition)

基　　金：国家科技支撑计划基金资助项目(2015BAG19B02)

摘　　要：介绍高速客车蛇形运动和临界速度,引入蛇形运动Hopf分岔,用“升速法”和“降速法”分别求解线性临界速度和非线性临界速度.用德国低干扰轨道谱作为轨道不平顺激扰,基于多体动力学软件SIMPACK,建立高速客车仿真模型,完成参数设置.求解出高速客车线性临界速度为400km/h,非线性临界速度为355km/h,绘制蛇形运动Hopf分岔图.对车辆主要悬挂参数进行线性处理,通过控制变量法分析单个悬挂参数对车辆非线性临界速度的影响;对于单个悬挂参数的取值,用变化系数法逐一实验.结果表明,适当增大抗蛇行减振器阻尼,车辆稳定性提升明显,轴箱定位刚度的影响次之,横向减振器主要提高车辆的曲线通过能力,空气弹簧参数对非线性临界速度基本没有影响.This article introduces the snake-like motion and critical velocity of high-speed bulletin trains, introduces snake motion Hopf bifurcation, and solves linear critical velocity and nonlinear critical velocity respectively with “speeding up method” and “Velocity-reducing method”. Basing on multi-body dynamic software SIMPACK, it established simulation model of high speed bulletin trains to complete the parameter setting by taking low interference orbital spectrum in Germany. The linear critical speed of high speed passenger cars is obtained as 400 km/h, and nonlinear critical speed is 355 km/h,and snaking motion Hopf bifurcation diagram is drawn. The main suspension parameters of vehicles are selected for linearization processing, and the article analyzes the influence of single suspension parameters on the vehicle nonlinear critical velocity with control variable method;For the value of a single suspension parameter, the variation coefficient method is used for testing one by one. The result shows that, a properly increase of the damping of the anti-snake motion shock absorber improved the stability of the vehicle obviously, and the influence of the positioning stiffness of the axle box will be the second.

关 键 词：高速客车 悬挂参数 HOPF分岔 临界速度 

分 类 号：U211.5[交通运输工程—道路与铁道工程]