RESEARCH PAPERS: Vehicular Vibrations

A Coupled Structural-Acoustic Finite Element Model for Vehicle Interior Noise Analysis

[+] Author and Article Information
S. H. Sung, D. J. Nefske

Engineering Mechanics Department, General Motors Research Laboratories, Warren, Mich. 48090

J. Vib., Acoust., Stress, and Reliab 106(2), 314-318 (Apr 01, 1984) (5 pages) doi:10.1115/1.3269187 History: Received June 20, 1983; Online November 23, 2009


An analytical method is developed for predicting vehicle interior noise and identifying noise sources. In this method, the finite element models representing the vehicle structure and its enclosed acoustic cavity are coupled mathematically. A modal formulation is employed to solve for the interior acoustic response, and an analysis is developed to identify the structural and acoustic modal participation as well as the boundary panel participation in producing the response. As an example application, a coupled model of an automotive vehicle is presented and experimentally evaluated. The modal and panel participations are identified from the results.

Copyright Ā© 1984 by ASME
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