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Different methods for computing the sound transmission through finite, thin baffled plates

 
: Piscoya, R.; Ochmann, M.; Aoki, Y.; Maysenhölder, W.

Elnady, T. ; The International Institute of Acoustics and Vibration -IIAV-:
Recent developments in acoustics, noise and vibration. 17th International Congress on Sound and Vibration, ICSV 2010. CD-ROM : Cairo, 18 - 22 July 2010 ; proceedings
Cairo, 2010
8 pp.
International Congress on Sound and Vibration (ICSV) <17, 2010, Cairo>
English
Conference Paper
Fraunhofer IBP ()

Abstract
In this paper, different approaches for calculating the sound transmission through thin finite plates under arbitrary (also dissipative) boundary conditions are investigated. First, the vibra-tions of the plate are determined by using a basis of polynomial functions. Second, a purely numerically based method, i.e. a coupled Finite-Element-Method (FEM) - Boundary-Element-Method (BEM) is applied. Finally, an iterative method which starts with the blocked- pressure approximation and takes into account the fluid load incrementally is devel-oped. Results obtained with these methods are presented and discussed.

: http://publica.fraunhofer.de/documents/N-154373.html