ABSTRACT
This paper presents a novel technique to represent the dynamic behavior of a resilient mounting element for marine applications. The information acquired from a recently published study by the same authors, focused on the quasi-static characterization of the isolator, is used to develop a numerical model to perform the modal analysis of the mechanical component. The numerical results are compared to the experimental transmittance curve, which estimates the performance of the vibration isolator in the frequency range under analysis. Several numerical models are generated and tested in this study, by changing the values of the frequency-dependent modal damping ratios, using an experimental design. By optimizing the dynamic coefficients, it is possible to characterize the dynamic behavior of the component. The procedure outlined in this paper constitutes a key part of the Transfer Path Analysis (TPA) of marine structures, implemented to reduce the vibrations transmitted by the marine diesel engine to the ship structures, in order to achieve higher comfort levels onboard.
