Abstract
The objective of this study is to analyze the bending and free vibration analysis of a new type of smart hybrid FG composite plate integrated with piezoelectric layers that are submerged in fluid. The proposed composites for some layers are carbon nanotubes (CNTs) and for some other are graphene oxide powder (GOP), along with two layers of piezoelectric sensors and actuators. Furthermore, two distinct combinations, namely GOP/CNTs/GOP and CNTs/GOP/CNTs, are analyzed. To capture the structural response of the system, exact linear three-dimensional piezoelasticity theory is employed to derive a semi-analytic solution for composite plates of arbitrary thickness, thereby avoiding simplifications in constitutive relations. The computation of fluid interaction components is performed using the Rayleigh integral method, and the coupling of structural and fluid interactions in the equations is addressed without imposing constraints on fluid density or assuming a far-field approximation. Parametric studies are carried out for the first time to investigate the impact of dimension ratios, reinforced distributions, and weight fractions of nanofiller on the natural frequency and static behaviour of the novel hybrid submerged smart composites.
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