EXACT-SOLUTIONS FOR DYNAMIC ANALYSIS OF COMPOSITE PLATES WITH DISTRIBUTED PIEZOELECTRIC LAYERS

Exact solutions are presented for analyzing dynamics of composite plat es with piezoelectric layers bonded at the top and the bottom surfaces . The expressions for mechanical displacements, stresses, electric dis placements and potential are derived from constitutive relations and f ield equations for the piezoelectric medium under applied surface trac tion and electric potential. The procedure is illustrated with a simpl y supported symmetric cross-ply (0 degrees/90 degrees/0 degrees) graph ite-epoxy composite plate covered with piezoelectric material polyviny lidene fluoride (PVDF). Results are in good agreement with those obtai ned from finite element model. (C) 1998 Elsevier Science Ltd. All righ ts reserved.