Flow-induced vibrations of shear-deformable laminated plates exposed to anoscillating flow

Using Reddy's higher order shear deformation plate theory, the flow-induced vibrations of simply supported shear-deformable laminated plates exposed t o an oscillating flow are studied. The plate is assumed to be placed normal to the flow. The fluid-structure interaction is based on Morison's model, which leads to a non-linear motion equation. The state variable approach is used in conjunction with the Spline collocation method to determine the dy namic response of the plate. Numerical illustrations concern the dynamic re sponse of antisymmetric angle-ply and symmetric cross-ply laminated plates under oscillating flow. The roles played by plate aspect ratio, total numbe r of plies, fiber orientation, as well as transverse shear deformation are studied. In all cases, non-linear effects lead to rather complex vibrations and to essentially chaotic motion. (C) 2001 Academic Press.