Abstract
The influence of the viscoelastic model employed to represent the stiffness of rubber mounts on the dynamic response of an elastomeric isolated system is investigated. A steel block supported on four rubber mounts is analysed. Each mount is characterised by its axial stiffness and two shear stiffness. Three viscoelastic models are proposed to fit the experimental stiffness of the mounts over a frequency range from 0 Hz to 50 Hz, defined by two, three and five parameters respectively. Simulations in IDEAS® are compared to dynamic measurements performed on the supporting system, showing that the Generalised-2 Maxwell model provides the best agreement.
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