惯容悬挂元件对铁路车辆垂向振动的影响

惯容是一种新型的悬挂元件,其具有两个独立、自由的端点。介绍了惯容的概念以及一种机械结构的实现方式。在Matlab/Simulink中建立了含有惯容悬挂元件的铁路车辆垂向动力学仿真模型。对该模型施加脉冲和随机两种轨道不平顺激励,选取一定范围的惯容系数,分析其对车体垂向振动的影响。在随机激励下,分析了二系垂向刚度和阻尼系数变化时,惯容系数对车体垂向平稳性的影响。分析结果表明：当惯容系数取值在一定范围内时,其对车体垂向振动具有明显的抑制作用。

Effects of Inerter Suspension Components on Vertical Vibration of Railway Vehicles

The inerter, as a new suspension component, has two independent and free terminals. This paper introduces the inerter as well as its realization by a mechanical structure. The vertical dynamic simulation model of the railway vehicle with inerter suspension components is firstly established by using Matlab/Simulink. Then by applying the pulse and random track irregularities excitation to the proposed model, this paper studies effects of the inerter on vehicle vertical vibration through selecting inerter coefficient within a range. Under the condition of random excitation, effects of inerter coefficient on the vertical stability index of carbody are analyzed with the change of vertical stiffness and secondary suspension damping. The analysis results show that the vertical vibration of carbody can be reduced obviously when the inerter coefficient is selected within a certain range.