✦ LIBER ✦

SOUND RADIATION FROM A PLATE INTO A POROUS MEDIUM

✍ Scribed by A. CUMMINGS

Publisher: Elsevier Science
Year: 2001
Tongue: English
Weight: 367 KB
Volume: 247
Category: Article
ISSN: 0022-460X
DOI: 10.1006/jsvi.2000.3736

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✦ Synopsis

A nearby layer of porous sound-absorbing material has previously been shown to be capable of greatly increasing the acoustic power radiated from a vibrating #at plate, and consequently of enhancing the structural damping in the plate. In this paper, a previously published model for sound radiation from a plate of in"nite extent, radiating into a semi-in"nite region of absorbent, is extended to allow for a "nite air gap between absorbent and plate, as well as a "nite absorbent thickness. Limited parametric studies are presented here for typical cases, and model predictions are compared to "nite-plate predictions and to measured data. It is concluded that the in"nite-plate model can be a useful design tool, presenting minimal computational demands.

2001 Academic Press

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