轮式车辆传动系自激振动强度及其影响因素分析

Analysis of the Amplitude of the Self Excited Vibration in Vehicle Power Train and Factors Influencing the Amplitude

建立了车辆传动系的数学模型，并用平均法求解，得出了车辆传动系自激振动振幅的表达式，研究了影响自激振动振幅的因素及其影响规律，并与相平面分析的结果相比较，验证了该振幅表达式的正确性。当滑转率大于临界滑转率时，地面附着系数随滑转率增加而减小的斜率车辆平均滑转率、发动机转速三个因素增大，自激振幅随之增大。

In this paper, the mathematic model of vehicle power train was established and solved by average method to get the formula of the self excited vibration amplitude. The limit cycles of the self excited vibration were given. In addition, the factors influencing the amplitude,such as the adhesion coefficient and slip, the thrust torque, speed and damping, were discussed.