Transient behavior of imperfect bi-directional functionally graded sandwich plates under moving loads

Abstract An investigation of dynamic behaviors a sandwich plate containing an imperfect two dimensional functionally graded (2D-FG) core surrounded by faces on two-parameter elastic foundation and subjected to moving load is carried out in this paper. The present solid composed porous 2D-FG covered homogenous layers. It assumed that the middle layer has micro voids dispersed uniformly unevenly through thickness. fundamental equations are governed within framework first-order-shear deformation theory utilizing Hamilton’s principle, von-Karman geometrical nonlinearity principal mixtures. Newmark direct integration procedure implemented transform into static form then kinetic relaxation numerical technique conjunction with finite difference discretization method employed solve nonlinear partial differential governing equations. Finally, effects porosity fraction scattering patterns, boundary constrains, variation materials’ grading indexes constants transient performances studied detail.