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The Quarterly Journal of Mechanics and Applied Mathematics 1984 37(4):553-563; doi:10.1093/qjmam/37.4.553
© 1984 by Oxford University Press
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THE DIFFRACTION OF SOUND WAVES BY AN ELASTIC HALF-PLANE ATTACHED TO A VERTICAL RIGID PLANE

F. GHANDCHI

( Department of Mathematical Sciences, The University Dundee, DDl 4HN )

The sound field of a line source is investigated when a structure consisting of a semi-infinite thin elastic plate, attached at right angles to a rigid plate of infinite extent, is embedded in a stationary acoustic medium. A formal exact solution is presented and the distant sound field is explicitly derived, with emphasis on the free modes of the coupled fluid-structure system. The significance of the contributions associated with different parts of the structure is exposed by taking two distinct limits of the fluid loading parameter relevant in aerodynamic and underwater problems.


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