An approximate theory for the sound radiated from a periodic line-supported plate

Mead, D. J. ; Mallik, A. K. (1978) An approximate theory for the sound radiated from a periodic line-supported plate Journal of Sound and Vibration, 61 (3). pp. 315-326. ISSN 0022-460X

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Official URL: http://linkinghub.elsevier.com/retrieve/pii/002246...

Related URL: http://dx.doi.org/10.1016/0022-460X(78)90383-8

Abstract

An approximate method is presented for estimating the sound power radiated by an infinite plate, supported elastically along parallel, equi-spaced lines and subjected to a simple pressure field convecting uniformly over the plate in a direction perpendicular to the supports. Suitable complex modes are assumed for the induced plate flexural wave motion, and an energy method is used to estimate the plate response and the radiated sound power. The effect on the plate response of the acoustic loading is taken into account. The influence of the convection velocity (which may be subsonic) and of certain plate parameters is investigated.

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ID Code:21978
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