Ride Comfort Analysis of Sedan Car using Quarter Car Suspension System Modelling and Simulation

With the application of high-tech technology in automobile industry, more attention is given to the ride performance which will directly affect the comfort and safety of the passenger/driver. This paper is focused on the study of vehicle ride performance using vehicle simulation model. Two degrees of freedom quarter car model of vehicle with Macpherson front suspension from Santana 2000Gsi saloon car is established. The parameters of the simulation model include the suspension stiffness, damping coefficient of shock absorber and the road excitation. The road surface excitation is gained by using white noise integral method. By inputting the calculated basic parameters into suspension simulation model, the ride performance can be evaluated. The parameters can be adjusted such that the vibration characteristics to be more intuitive, which further laid the basis for accurate vibration control.