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A wave-oriented meshless formulation for acoustical and vibro-acoustical applications

par Bouillard, Philippe ;Lacroix, Valéry ;De Bel, Erik
Référence Wave motion, 39, 4, page (295-305)
Publication Publié, 2004-04

Article révisé par les pairs

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Résumé :

Simulating acoustical or vibro-acoustical waves within the medium frequency range is still an open problem today. In this paper, we first demonstrate that it is possible to formulate an improved element-free Galerkin method (I-EFGM) for the uncoupled acoustical problem applied to three-dimensional complex geometries. Then, we develop a partition of unity formulation extended for the elastodynamics (PUM-dyn). Finally, by coupling both formulations with an appropriate formulation for 2D vibro-acoustical coupled problems, we demonstrate that an I-EFGM coupled to the PUM-dyn seems to be an excellent way to reach the medium frequencies accurately and with an acceptable CPU time. © 2003 Elsevier B.V. All rights reserved.