The vibro-acoustics of a plate-backed cavity with non-homogeneous porous materials

Auteurs-es

  • C.K. Amedin Dept. of Mechanical Engineering, Université de Sherbrooke, Boul. Université, Sherbrooke, Que. J1K 2R1, Canada
  • N. Atalla Dept. of Mechanical Engineering, Université de Sherbrooke, Boul. Université, Sherbrooke, Que. J1K 2R1, Canada
  • F. Sgard Dept. of Mechanical Engineering, Université de Sherbrooke, Boul. Université, Sherbrooke, Que. J1K 2R1, Canada

Mots-clés :

Boundary conditions, Computer simulation, Elasticity, Finite element method, Integral equations, Plates (structural components), Porous materials, Stiffness, Strain, Tensors, Vectors, Vibrations (mechanical), Air pockets, Nonhomogenous porous materials, Plate backed cavity, Vibroacoustics

Résumé

The effects of air pocket or elastic patches in a homogeneous porous domain were studied. The different domains were modeled by using accurate finite element methods. It was found that the addition of air pocket does not deteriorate the acoustic performance, but leads to a reduction of the weight of the configuration. On the other hand, an increase of the acoustic performance was obtained by insertion of elastic patches, but not without any increase of the configuration weight.

Fichiers supplémentaires

Publié-e

2001-09-01

Comment citer

1.
Amedin C, Atalla N, Sgard F. The vibro-acoustics of a plate-backed cavity with non-homogeneous porous materials. Canadian Acoustics [Internet]. 1 sept. 2001 [cité 6 mai 2026];29(3):28-9. Disponible à: https://jcaa.caa-aca.ca/index.php/jcaa/article/view/1372

Numéro

Vol. 29 No. 3 (2001)

Rubrique

Actes du congrès de la Semaine canadienne d'acoustique

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