Sound wave scattering by a flexible plate embedded on water surface is considered. Linear acoustics and plate elasticity are assumed.\r\nThe aim is to assess the effect of the plate�s flexibility on sound scattering and the potential in using that flexibility for this purpose.\r\nA combined sound-structure solution is used, which is based on a Fourier transform of the sound field and a finite-difference\r\nnumerical-solution of the plate�s dynamics. The solution is implemented for a circular plate subject to a perpendicular incoming\r\nmonochromatic sound wave. A very good agreement is achieved with a finite-difference solution of the sound field. It is shown\r\nthat the flexibility of the plate dampens its scattered sound wave regardless of the type of the plate�s edge support. A hole in the\r\nplate is shown to further scatter the sound wave to form maxima in the near sound field. It is suggested that applying an external\r\noscillatory pressure on the plate can reduce significantly and even eliminate its scattered wave, thus making the plate close to\r\nacoustically invisible. A uniformly distributed external pressure is found capable of achieving that aim as long as the plate is free\r\nedged or is not highly acoustically noncompact.
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