Abstract
The velocity distribution along a rib-stiffened thin plate immersed in a fluid and driven by a temporal harmonically varying line force is considered. To solve the coupled fluid-elastic equations of motion, the Fourier transform approach is used. The resulting integrals are numerically integrated directly without the aid of contour integration. Previous studies have primarily dealt with the radiated acoustic field from plates reinforced with symmetric stiffeners. The presence of an asymmetric stiffener provides a mechanism whereby flexural wave energy can be converted into longitudinal wave energy or vice versa. The significance of this energy conversion due to inertia coupling between the flexural and longitudinal motions of the plate is investigated. Results are presented for symmetric and asymmetric stiffeners with and without fluid loading. In addition, the effect of structural damping and fluid loading on the velocity field of a uniform infinite plate is discussed.
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