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Abstract
This paper presents an experimental procedure to measure the dynamic properties of resilient mounting elements, commonly used in the marine industry to isolate the marine diesel engine from the supporting structure. First, the transfer mobility function of the isolator is measured experimentally. A numerical model, simulating the modal response with a finite-element model is then created. Using Response Surface Methodology (RSM), the frequency-dependent values of the damping ratio of the numerical model are optimized in order to maximize the fit to the experimental transfer function. This analysis, performed on two resilient mounting elements for marine applications, with different shape and size, is used to outline an experimental methodology for the dynamic characterization of a vibration isolator. The analysis presented in this paper builds upon the outcome of a previous work, where the coefficients of the hyperelastic constitutive relationship of the rubber material of the isolator, used in this paper, are estimated with RSM.
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