Abstract
In this paper, a new four-variable refined plate theory for static analysis of laminated functionally graded carbon nanotube (FG-CNT) reinforced composite plates integrated with a piezoelectric composite (PFRC) actuator under electro-mechanical loadings is developed. Four types of CNTs distribution through the thickness of each FG-CNT layer are considered. The principle of minimum potential energy and the Navier's technique are used for establishing and solving the governing equations of simply supported rectangular plates. The comparison of obtained results with first-order shear deformation theory, simple four-variable theory and higher-order shear deformation theory indicates that the proposed formulation is simple and high accuracy for analyzing FG-CNT integrated with PFRC. The effects of electrostatic load, CNT volume fraction, type of CNT distribution and geometrical parameters on the displacements and stresses of the plates are also examined in detail.
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