Size-dependent static bending and free vibration analysis of porous functionally graded piezoelectric nanobeams

According to electric enthalpy variation and Hamilton's principle, governing differential equations and boundary conditions of functionally gradient piezoelectric nanobeams with porosities are established. The generalized differential quadrature method plays the role of transforming governing differential equations into a group of linear algebraic equations. Based on the strain gradient theory, a size-dependent functionally gradient...