Coupled FSDT for piezothermoelectric hybrid rectangular plate

The first order shear deformation plate theory is presented for simply-supported, cross-ply laminated, rectangular hybrid plate without assuming a priori the distribution of electric potential and temperature across its thickness. The coupled constitutive equations for electric displacement are used in the charge equation of equilibrium to obtain its solution in terms of displacements of the plate. The Navier type solution for static thermoelectric load is used in three dimensional equilibrium equations to get transverse stress components. This theory is assessed by comparison with the three dimensional solution. The influence of the coupled effects is found to be significant for relatively thick piezoelectric layers.