Vibration characteristics of suspension is one of key factors for vehicle N.V.H. This paper is studied the vibration analysis of dual link type suspension, which most used by rear suspension, in consideration of forces transmitted to body. This system is modeled as rigid bodies and connections with 78 degrees of freedoms. To simulate the model is used by AUTOSIM, commercial simulation software to simulate multi-body system. This model is correlated and compared to test results to prove the validity of simulation. The stiffness and damping of bushings which is important characteristics of system dynamics are estimated by test .The model is used to investigate the effect of forces transmitted to body by variation of stiffiness and damping of bushings.
