基于惯容器的轨道车辆悬挂系统性能研究  

Performance of track vehicle suspension system based on inerters

作　　者：陈文韬[2,3] 封周权 陈政清 樊友权[3] 牛华伟 CHEN Wentao;FENG Zhouquan;CHEN Zhengqing;FAN Youquan;NIU Huawei(State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body,Hunan University,Changsha 410082,China;Key Laboratory for Wind and Bridge Engineering of Hunan Province,Hunan University,Changsha 410082,China;Zhuzhou Lince Group Holding Co,Ltd,Zhuzhou 412001,China)

机构地区：[1]湖南大学汽车车身先进设计制造国家重点实验室,长沙410082 [2]湖南大学风工程与桥梁工程湖南省重点实验室,长沙410082 [3]株洲联诚集团控股股份有限公司,湖南株洲412001

出　　处：《振动与冲击》2019年第23期171-177,共7页Journal of Vibration and Shock

基　　金：湖南大学汽车车身先进设计制造国家重点实验室自主研究课题(71860006;71865004);广东省地震工程与应用技术重点实验室开放基金项目(2014B030301075-02)

摘　　要：建立了轨道车辆“惯容器-弹簧-阻尼”(Inerter Spring Damper,ISD)悬挂结构垂向振动的动力学模型,采用强迫振动理论进行了振动响应特性以及隔振性能分析。研究发现:ISD结构的振幅、振幅放大因子、速度放大因子和加速度放大因子相对质量比存在极小值点,此最优质量比是频率比和阻尼比的函数;阻尼比和质量比建议取值范围为ξ<0.2及0.1<μ<0.3,此时隔振性能可得到最大程度提升;质量比越大,相位差越小。推导了临界频率比、共振点频率比与质量比的关系,质量比越大,临界频率比和共振点频率比越小,共振点处的振幅放大因子以及共振区宽度也明显减小。该结果对轨道车辆ISD悬挂结构的减隔振性能分析和轻量化研究提供了一种新的思路,并对ISD结构设计中关键参数的选取提供了参考。In order to study effects of inerter on vibration response and vibration isolation performance of a track vehicle inerter-spring-damper(ISD)suspension structure,its vertical dynamic model was established.The forced vibration theory was used to analyse the system’s vibration response characteristics and vibration isolation performance.The results showed that there are minimum value points on curves of amplitude,amplitude amplification factor,speed one and acceleration one of ISD structure versus its mass ratio,and these optimal mass ratios are functions of frequency ratio and damping one;the suggested ranges of damping ratio and mass one areξ<0.2 and 0.1<μ<0.3,within these ranges,the system’s vibration isolation performance can be lifted to the maximum extent;the larger the mass ratio,the smaller the phase difference;relations of critical frequency ratio and resonance point frequency ratio versus mass ratio are derived,the larger the mass ratio,the smaller the critical frequency ratio and resonance point one,and amplitude amplification ratio at resonance point and width of resonance region obviously decrease;the study results provide a new way for track vehicle ISD suspension structure’s vibration isolation performance analysis and lightweight study,and a reference for choosing key parameters in ISD structure design.

关 键 词：惯容器 ISD悬挂结构 垂向振动 振动响应特性 隔振性能 

分 类 号：U270.1[机械工程—车辆工程]