Free and Forced Vibration of Sandwich FGM Porous Variable Thickness Nanoplates Integrated with Magneto-Electro-Elastic Layers Via Nonlocal Strain Gradient Theory

Abstract

In the present study, free and forced vibration analysis of sandwich smart magneto-electro-elastic (MEE) nanoplates with functionally graded material porous (FGMP) of linearly or parabolically varying thickness core layer under initial external electric and magnetic potentials is studied using the first-order shear deformation theory (FSDT) and nonlocal strain gradient theory (NSGT). NSGT is perfected with softening and hardening material effects, which can significantly improve the precision of results. Three states of porosity distribution patterns, i