In this paper the nonlinear behaviour of passive suspension system for quarter car is studied. The mathematical model
is developed with the help of equations of motions. In the actual practice, all system behaves nonlinearly but for simplification
purpose it consider as linear. A linear system can capture basic performances of vehicle suspension such as body displacement,
body acceleration, wheel displacement, wheel deflection, suspension travels. Performance of suspension system is determined by
the ride comfort and vehicle handling. It can be measured by car body displacement and wheel deflection performance. Two
types of road profiles are used as input for the system. The quarter car two degree of freedom and MATLAB-SIMULINK model
is developed for the nonlinear quarter car passive suspension system.
