Author(s)

C. Cali, R. Citarella, A. Galasso

Abstract

Transmission loss assessment by integrated FEM-BEM methodology C. Cali% R. Citarella', A. Galasso^ ^Department of Mechanical Engineering, University of Salerno, Italy ^Elasis S.C.p.A. (Fiat Group), Pomigliano (NA), Italy Abstract Nowadays, one of the most valuable criteria for vehicle quality assessment is based on acoustic emission levels: a car is judged comfortable also depending on the noise level transmitted inside. Consequently there is a general attention to design criteria aimed to improve the structural-acoustic behaviour in such a way to withstand the increasingly restrictive ergonomic standard. Such design approach, based on experimental and numerical procedures, enables the prediction of noise emissions and its correlation with the structural vibration source. The following step is the redesign of those components responsible for intolerable emissions, without the need for an extensive and expensive prototyping effort. This work, realised in collaboration with EL

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