Three-dimensional thermoelastic analysis of a functionally graded truncated conical shell with piezoelectric layers

Abstract

In this study, three-dimensional thermoelastic behavior of a functionally graded (FG) truncated conical shell with piezoelectric layers perfectly bonded to its inner and outer surfaces under electro–thermo–mechanical loads is investigated. The material properties of the FG truncated conical shell are assumed to be graded along the thickness according to a power-law function while the Poisson’s ratio is considered constant. The differential quadrature method (DQM) is utilized to obtain numerical results. The findings of this method are compared with the results published in the literature and excellent agreement with significantly fast convergence is shown. Parametric studies are performed to demonstrate the effects of the FG grading index, edge boundary conditions, semi-vertex angle of the shell, and thickness of the piezoelectric layers on the distribution of stress components, displacements, and electric potential.