Study of Effective Analysis Method for Vehicle Model Considered Rubber Bush

Abstract

A rubber bush used in an automotive suspension system is an important element for the riding comfort and the driving stability. Since rubber bush has a high stiffness, a vehicle model considering rubber bushes has high natural frequencies. In the analysis of such a stiff system, a small time step is required to execute a steady simulation. As a result, the amount of calculation is increased. However, in real-time analysis, it is necessary to calculate each step of numerical integration within a specified time. Therefore, real-time analysis of a stiff system requires high efficiency. In this paper, the dynamics analysis of a vehicle model with rubber bush was executed with Generalized-α method, and the execution speed and the accuracy of analysis were evaluated.