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High Frequency Vibro-Acoustic Analysis Using Energy Finite Element Method
ISSN: 1946-3995, e-ISSN: 1946-4002
Published April 20, 2009 by SAE International in United States
Citation: Zhang, W. and Raveendra, S., "High Frequency Vibro-Acoustic Analysis Using Energy Finite Element Method," SAE Int. J. Passeng. Cars – Mech. Syst. 2(1):822-831, 2009, https://doi.org/10.4271/2009-01-0771.
As an alternative method to Statistical Energy Analysis (SEA), Energy Finite Element Method (EFEM) offers several unique advantages for vibro-acoustic analysis of structural-acoustic systems. In this paper, the theory of the energy finite element method is overviewed. The main developments of a recently available EFEM code are presented. This is followed by the investigation of several example problems using EFEM; (a) the acoustic pressure computation in an acoustical duct, (b) the sound transmission loss of an automotive dash, and (c) the vibro-acoustic analysis of a truck cab. The EFEM predictions are compared to the analytical solutions, SEA predictions or test data and good correlations are observed. Further, the advantages of EFEM in the solution of high and middle frequency vibro-acoustic problems are discussed.