Abstract
In the present article, three-dimensional size dependent thermal analysis of three-layered nanoplate with porous graded core and two piezomagnetic face-sheets is studied based on nonlocal strain gradient theory considering thickness stretching effect. The sandwich nanoplate standing on an elastic foundation and face layers are exposed to electric/magnetic potentials. Porosity is evenly and unevenly repartitioned thorough thickness of the core. To predict both reduction and enhancement of stiffness in small scales, a nonlocal parameter and a strain gradient parameter is used for analysis. The governing equations are derived using the principle of virtual works based on sinusoidal shear and normal deformation theory. The small size effect is obtained exploiting Eringen’s nonlocal elasticity theory. The influences of the porosity coefficient, temperature parameters, electric/magnetic potential, boundary conditions (simply supported and clamped) and parameters of foundation on bending, electrical, and magnetic behaviors of the sandwich nanoplate are presented and discussed.
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