关键词: 振动与波, 橡胶节点, 温变特性, 动态刚度, 临界速度, 车辆动力学性能

Abstract:

In order to study the influence of temperature characteristic of axle-box tumbler rubber node on vehicles dynamics performance, a series of test and dynamics simulation are accomplished. The experimental results show that the dynamic damping and dynamic stiffness of rubber node decrease with the increase of ambient temperature. Changes in the stiffness and damping of a rubber node will result in changes in the dynamic performance of the rail vehicle system. The simulation results show that the critical speed of the snake rises first and then decreases with the change of ambient temperature. Other dynamic properties, such as stability and safety index, change relatively complicated with the temperature rising.