Efficient Layerwise Finite Element Model for Multilayer Sandwich Plates Analysis

In this paper, a new 2D quadrilateral finite element model, based on the layerwise approach, is developed for bending and free vibration analysis of multilayer sandwich plates. Unlike any other layerwise theory, the number of degrees of freedom in this present model is independent of the number of layers. Both, high order and first order shear deformation theories are used in order to model the core and face-sheets respectively. This combined theory satisfies the compatibility conditions as well as continuity of displacements, at the interface. The numerical results obtained by our model are compared favorably with those obtained via analytical solution and numerical results obtained by other models.