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Abstract—Suspension system is made to have the ride comfort. The vibrations are not transferred from
tire to the passenger if suspensions are good. According to road profile vibrations are transferred
through the suspension strut to the chassis (unsprung mass) to the sit and to the passenger. In
this case the most important factor is vertical acceleration produced in sprung mass. So, reduction
in the vertical acceleration gives the better ride comfort. Thus analysis of suspension is to be
done for vertical acceleration. This paper emphasise on the effect of suspension parameters
i.e. sprung mass, unsprung mass, damping value, suspension spring stiffness and tire stiffness
on vertical acceleration. For analysis purpose, the simple quarter car model is considered. The
equation of motions is obtained in the differential form. These equations of motion are basis for
the Simulink model in MATLAB. This simulation will help to simulate parameters of suspension.
Thus vertical accelerations are obtained at different working conditions and maximum values of
accelerations will be obtained. Then same excitations are given to suspension test rig. These
values are then actually verified on suspension test rig
Index Terms—Simulink model, Suspension test, RIG
Cite: J B Ashtekar and A G Thakur, "Simulink Model of Suspension System and its Validation on Suspension Test Rig," International Journal of Mechanical Engineering and Robotics Research, Vol. 3, No. 3, pp. 811-818, July 2014.