A hybrid method is developed by combining energy finite element method (EFEM) and energy boundary element method (EBEM) to predict interior noise of structural-acoustic systems at high frequencies. In the hybrid EFEM/EBEM method, the structural domain of the system is modeled by structural finite elements, and the acoustic domain is modeled by acoustic boundary elements. The structural vibration response is computed from EFEM. The interior sound pressure level in the acoustic domain is recovered using EBEM. To validate the hybrid method, the interior noise levels in simplified airplane cabin and van models are computed and compared with that of EFEM only model. Good correlations are observed.
Vibro-acoustic Analysis Using a Hybrid Energy Finite Element /Boundary Element Method
Sae Technical Papers
SAE 2007 Noise and Vibration Conference and Exhibition ; 2007
2007-05-15
Aufsatz (Konferenz)
Englisch
Vibro-acoustic analysis using a hybrid energy finite element/boundary element method
Kraftfahrwesen | 2007
|High Frequency Vibro-Acoustic Analysis Using Energy Finite Element Method
SAE Technical Papers | 2009
|Resolution of vibro-acoustic problems using finite and boundary element methods
British Library Conference Proceedings | 1994
|Finite element prediction of vibro-acoustic environments
Tema Archiv | 1989
|Finite Element Prediction of Vibro-Acoustic Environments
SAE Technical Papers | 1989
|