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Volume 12 article 295 pages: 217 - 226
Shock absorbers are fundamental part of the
vehicle suspension. Suspensions are needed to guarantee vehicle handling and
passenger riding comfort. For good handling and braking performance of the
vehicle, the tire-road contact forces need to be as stable as possible. Each
wheel should always remain in contact with the ground. Comfort means that
vibrations, induced by road profile during riding, are of a minimal nuisance to
the passengers. When designing a new vehicle, a lot of development effort is
focused on the optimal choice of the suspension parameters, stiffness and
damping. This paper presents some results of an experimental study conducted on
three shock absorbers types that are in current production at Magneti-Marelli.
Experimental tests were performed in conditions of random excitation. The aim
of this study, based on the experimental data and by use of statistical
methods, was to investigate which of the kinematic parameters of excitation has
the major impact on damping force of shock absorber (displacement, velocity
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