低地板有轨电车准零刚度二系悬挂系统研究  

Study on Second Quasi-zero-stiffness Suspension of Low-floor Tramcar

作　　者：孙煜[1] 宫岛[1] 周劲松[1] 孙文静[1] 夏张辉 

机构地区：[1]同济大学铁道与城市轨道交通研究院,上海201804

出　　处：《机械工程学报》2017年第8期132-137,共6页Journal of Mechanical Engineering

基　　金："十二五"国家科技支撑计划资助项目(2015BAG19B02;2015BAG13B01)

摘　　要：利用一对横向放置的线性弹簧在垂向产生负刚度,与垂向正刚度线性弹簧并联组成准零刚度隔振系统,结合低地板有轨电车转向架U型侧架,设计出适用于低地板有轨电车的准零刚度二系悬挂系统。对所设计的二系悬挂系统分别进行静力学、动力学分析,得到其刚度特性和传递率特性。通过SIMAPCK动力学仿真软件建立了三车连挂低地板有轨电车模型,与MATLAB/SIMULINK进行联合仿真。研究结果表明,与等效线性弹簧二系悬挂系统相比,准零刚度二系悬挂系统隔振频率范围更广,尤其是在低频阶段,具有良好的隔振特性,可以有效减小车体振动,提高运行平稳性,改善乘坐舒适度。The quasi-zero-stiffness is obtained by connecting in parallel elements with positive and negative stiffness, in which the negative stiffness is obtained by a pair of linear springs placed horizontally. An appropriate second suspension system is designed by combining the quasi-zero-stiffness with the U type side frame of the tramcar. The stiffness characteristics and transfer rate of the second suspension system are gained respectively by static and dynamic analysis. A low-floor tramcar model with three cars is established by SIMPACK, which was co-simulated with MATLAB/SIMULINK. The results shows that compared with the equivalent linear suspension, the quasi-zero-stiffness suspension is of extent isolation frequency and better vibration isolation characteristics especially in the low frequency range. The low-floor tramcar with second quasi-zero-stiffness suspension is of lower vibration in car body, better running stability and ride comfort.

关 键 词：低地板有轨电车 准零刚度 联合仿真 运行平稳性 传递率 

分 类 号：U270[机械工程—车辆工程]