THE BENDING SOLUTION OF PIEZOELECTRIC FUNCTIONALLY GRADIENT RECTANGULAR THIN PLATE

On the basis of the classical theory of Kirchhoff plate and assuming the physical properties obey a power law in the thickness of piezoelectric functionally graded materials, the modified classical laminate theory involving piezoelectric coupling terms is used. The governing equations of piezoelectric functionally gradient thin plate subjected to mechanical load and applied electric field are developed. Applying bi-triangle series expansion, the stress and displacement are obtained for piezoelectric functionally gradient rectangular thin plate with different boundary conditions subjected to the electric field. Then the influences of gradient parameter on its behaviors are discussed. These results obtained satisfy engineering requirement and the solving is straightforward.