Sound Radiation From a Finite Cylindrical Shell Covered With a Compliant Layer

Author:

Laulagnet B.1,Guyader J. L.1

Affiliation:

1. Laboratoire Vibrations-Acoustique, 20 Avenue A. Einstein, 69621 Villeurbanne Cedex, France

Abstract

The aim of this work is to present the mathematical analysis and numerical results about sound radiation from a finite cylindrical shell covered with a compliant layer, immersed in water. The shell motion is obtained using Flu¨gge’s operator whereas the layer is described by a locally reacting material. The results are presented both in shell radial quadratic velocity and radiated power. Two major conclusions can be drawn when looking at results: (1) a reasonable stiffness layer allows one to reduce the radiated power in a large frequency domain; (2) the layer has a strong influence on the shell velocity which exhibits an antiresonance phenomenon when covered.

Publisher

ASME International

Subject

General Engineering

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