ABSTRACT
If temperature effects are neglected and rubber is subjected to harmonic, small amplitude, excitations, the linearization of the filled rubber model is straightforward. For a given frequency, the stiffness magnitude would be the one provided by the exerted force divided by the displacement amplitude (Sjöberg 2002)(Gil-Negrete 2004). However, most vehicles and many machines are subjected to random excitation rather than to a harmonic one. Thus, a deeper insight on the behavior of rubber under random excitation is needed to perform a proper linearization of the non-linear rubber models, in order to simulate accurately the response of the rubber parts.
