A Dynamic Analysis and Evaluation of a Car Suspension System with Different Parameters

Abstract

The suspension system in the car is responsible for stability and balance in both the car’s body and the driving room and maintains the stability of the car on the roads and turns to ensure the comfort of the passengers, as it absorbs the shocks resulting from the unevenness of the road and prevents them from reaching the driving room. The system works by means of helical springs and vibration dampers that allow the tire to rise slowly when one of the tires encounters an obstacle on the road, and the suspension system prevents it from reaching the driving room, which contributes to maintaining the stability of the car. The main objective of this paper is to study and evaluate the performance of the suspension system in cars. To evaluate the performance of the system, it was necessary to derive a mathematical model for the system using a certain model called the Quarter car model, after which the system is simulated by MATLAB Software. Also, in this paper, some variables such as the spring constant and the damping coefficient were studied to evaluate the performance of the system, in addition to the effect of the mass of the electric motors that are installed in the wheels when manufacturing electric cars.