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Communication Dans Un Congrès Année : 2013

Analysis of the sound radiated by a heavy fluid loaded structure excited by an impulsive force

Laurent Maxit
Jean-Louis Guyader
C. Audoly
  • Fonction : Auteur
M. Bertinier
  • Fonction : Auteur

Résumé

The aim of this work consists in evaluating and analyzing vibrations and radiated pressure from a fluid loaded structure excited by a transient mechanical source. The time signature can be estimated from a discrete inverse Fourier transform of the Frequency Response Functions (FRF) of the considered system. In order to validate the numerical process, a simple structure composed of an infinite flat plate excited by an impulse point force is considered. Results are compared with an analytic result for the in-vacuo plate. When the plate is immerged on one side, the vibrations and radiated pressure from the plate are evaluated with the developed numerical process. Then, one studies the effect of the fluid loading and the dispersive nature of the flexural waves on the vibrations, and radiated pressure time signature in the far field of the plate. A comparison between Khirchoff-Love and Mindlin Timoshenko plate is also made.
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Dates et versions

hal-00994597 , version 1 (22-05-2014)

Identifiants

  • HAL Id : hal-00994597 , version 1

Citer

R. Scherrer, Laurent Maxit, Jean-Louis Guyader, C. Audoly, M. Bertinier. Analysis of the sound radiated by a heavy fluid loaded structure excited by an impulsive force. Internoise 2013, 2013, Innsbruck, Austria. pp.#827. ⟨hal-00994597⟩
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