The purpose of this paper is showing the electro-elastic static behavior of a cylindrical sandwich pressure integrated with piezoelectric layers. The core is made from functionally graded carbon nanotubes reinforced composite (FG-CNTRC) materials while is integrated with piezoelectric layers made from PZT-4. The effective material properties of reinforced core with carbon nanotubes(CNTs) are calculated based on rule of mixture. The constitutive relations are developed in cylindrical coordinate system based on a higher-order shear deformation theory for both core and piezoelectric layers. The employed higher-order theory is based on third-order variation of deformations along the thickness direction to improve the accuracy of numerical results. The method of eigenvalue-eigenvector is used for solution of system of governing equations along the longitudinal direction. The numerical results are provided along the longitudinal and radial directions in terms of significant parameters such as various patterns of CNTs, Various volume fractions of CNTs, various elastic foundation coefficients and various applied electrical potentials.

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