DYNAMIC MODELLING OF A QUARTER CAR PASSIVE SUSPENSION SYSTEM AND OPTIMIZATION THROUGH GENETIC ALGORITHM

Abstract

The suspension system is one of the important part of any automotive system. The linkage between wheel axle and chassis is called automotive suspension system consists spring and damper. The function of suspension system is basically of comforting our ride and it has been used since ages starting from horse carriage which used leaf springs on wheels and now to all vehicles and further with expanding technology to complex algorithms. The suspension system supports the vehicle by isolating frame from road vibrations which gives directional stability. There are two types of suspension soft and stiff. Soft suspension if suspension is required for carrying more loads. Good handling requires a balance between soft and stiff suspension. However, these criteria subjectively depend on the purpose of the vehicle. For example, a sports car driver will accept a relatively hard ride as a compromise for high-speed handling and safe fast cornering. But the same ride would be intolerable for the passengers of a big saloon car.