A layer-wise Reissner-Mindlin-type model for the vibration analysis and suppression of piezoactuated plates

A layer-wise model of three-layer piezoelectric sandwich plates is presente d. Each layer is modeled according to a first-order shear deformation theor y. Both a variational formulation and a locking-free finite-element formula tion of the sandwich-plate problem are developed. The latter is based on a new bilinear quadrangular four-node finite element with 13 degrees of freed om per node and is validated by comparing the numerical and the analytical solution of a special problem. The proposed model is applied to the analysi s of the vibration suppression problem of a thick cantilever steel plate eq uipped with a piezoelectric actuator, and turns out to be especially useful when a thick piezoelectric actuator is used. (C) 2001 Civil-Comp Ltd. and Elsevier Science Ltd. All rights reserved.