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

Authors

  • 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

Keywords:

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

Abstract

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.

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Published

2001-09-01

How to Cite

1.
Amedin C, Atalla N, Sgard F. The vibro-acoustics of a plate-backed cavity with non-homogeneous porous materials. Canadian Acoustics [Internet]. 2001 Sep. 1 [cited 2021 Dec. 2];29(3):28-9. Available from: https://jcaa.caa-aca.ca/index.php/jcaa/article/view/1372

Issue

Section

Proceedings of the Acoustics Week in Canada

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