Modeling and Simulation of a Simple Linear Suspension with Simcenter Amesim Software

Abstract

The present paper aims to present an approach to the modelling and simulation of a car suspension system considered as a ground - spring - shock absorber system. The suspension system uniformly transmits the forces acting on the vehicle to the running surface and at the same time isolates it from the forces acting from the running track, improving its comfort and maneuverability. Simcenter Amesim is a simulation program for modelling and analyzing multi-domain systems. The software package is a suite of tools used to model, analyze and predict the performance of mechatronic systems. The car suspension simulation scheme was developed using the Amesim program and consisted of the suspended mass (body), the spring-damper subsystem (wheel damper), the unsuspended mass (chassis) and the auxiliary damping elements (wheel joints, tires and friction between the elements their assembly). We found that the damping speed of the suspended part is achieved faster than that of the unsuspended part after analyzing the two graphs of the damping speed of the body and chassis by about 0.3 [s] less. Tires also have an influence on the general damping system, which in our case was not taken into account.