Wave Finite Element based Strategies for Computing the Acoustic Radiation of Stiffened or Non-Stiffened Rectangular Plates subject to Arbitrary Boundary Conditions - Archive ouverte HAL Accéder directement au contenu
Communication Dans Un Congrès Année : 2012

Wave Finite Element based Strategies for Computing the Acoustic Radiation of Stiffened or Non-Stiffened Rectangular Plates subject to Arbitrary Boundary Conditions

Résumé

The wave finite element method (WFE) is investigated for the computation of the acoustic radiation of stiffened or non-stiffened rectangular plates under arbitrary boundary conditions. The method aims at computing the forced response of periodic waveguides (e.g. rectangular plates that are homogeneous or that contain a periodic distribution of stiffeners) using numerical wave modes. A WFE-based strategy is proposed which uses the method of elementary radiators for expressing the radiation efficiencies of stiffened or non-stiffened baffled rectangular plates immersed in a light acoustic fluid. In addition, a model reduction strategy consisting in using reduced wave bases for computing these radiation efficiencies with small CPU times is proposed. Numerical experiments highlight the relevance of the strategies.
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Dates et versions

hal-00816783 , version 1 (23-04-2013)

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Jean-Mathieu Mencik, Marie-Laure Gobert. Wave Finite Element based Strategies for Computing the Acoustic Radiation of Stiffened or Non-Stiffened Rectangular Plates subject to Arbitrary Boundary Conditions. The Eleventh International Conference on Computational Structures Technology, Sep 2012, Dubrovnik, Croatia. Civil-Comp Press, Stirlingshire, UK, Paper 218, 2012, ⟨10.4203/ccp.99.218⟩. ⟨hal-00816783⟩
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