THERMO-ELECTRO-MECHANICAL ANALYSIS OF CYLINDRICAL SHELL MADE OF FUNCTIONALLY GRADED PIEZOELECTRIC MATERIALS USING ARBITRARY HIGHER-ORDER SHEAR DEFORMATION THEORY

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JABBARI M.; ZAMANI NEJAD M.

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Journal: MECHANICAL ENGINEERING SHARIF (SHARIF: MECHANICAL ENGINEERING) Year:2018 | Volume:34-3 | Issue:1 Page(s): 125-135

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Title

THERMO-ELECTRO-MECHANICAL ANALYSIS OF CYLINDRICAL SHELL MADE OF FUNCTIONALLY GRADED PIEZOELECTRIC MATERIALS USING ARBITRARY HIGHER-ORDER SHEAR DEFORMATION THEORY

Author(s)

JABBARI M. | ZAMANI NEJAD M. | Issue Writer Certificate

Keywords

ThermoQ1

electroQ1

elastic analysisQ1

thick cylindrical shellQ1

arbitrary higherQ1

order shear deformation theory (HSDT)Q1

functionally graded piezoelectric material (FGPM)Q1

Abstract

The shells are the engineering structures that create the highest mechanical efficiency with minimal materials. with high mechanical efficiency and the least materials. Given that they are commonly used in most industrial equipment, it is necessary to gain insights into the conditions of Thermo-electro-mechanical loading. For this purpose, in this study the Thermo-electro-elastic behavior of piezoelectric functionally graded thick-walled cylinder subjected to the temperature gradient is investigated. Given the existence of shear stress in the thick cylindrical shell, the governing equations are obtained based on shear deformation theory (SDT). Thus, based on arbitrary higher-order shear deformation theory (HSDT), Thermo-electro-elastic equation of functionally graded material axisymmetric thick-walled cylinders in general form is derived. The material properties of the media are assumed to vary continuously according to a power-law formulation. It is assumed that the two-dimensional axisymmetric cylinder is not exposed to any heat source. By the assumption of an element in the cylindrical coordinate system in the steadystate, the temperature distribution has been computed. According to Maxwell electrodynamics equations, the equation of temperature distribution in the cylinder wall thickness under considered boundary conditions and energy method, nonhomogeneous di erential equation is derived. These equations are in the form of a set of general di erential equations with constant coe cients. Following that, the set of non-homogenous linear di erential equations for the cylinder with clamped-clamped ends was solved. The numerical results obtained are presented graphically for special case. The results obtained through the present method are compared to the reported results in the literature. A comparative study of Thermo-electro-elastic analysis is given for shear deformation approximation. From the present study, it can be concluded that the higher-order approximations must be applied in order to improve the accuracy of the shear deformation theory. Finally, the e ect of loading and supports on the stresses, displacements and electrical potential were investigated. It can be seen that in the vicinity of the axial boundaries of the cylinder, the thermal stresses show a di erent characteristic from its general behavior over the maximum part of the cylinder. In this very small region, due to edge moments, the absolute value of thermal stresses has a higher value from the points away from boundaries.

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APA: Copy

JABBARI, M., & ZAMANI NEJAD, M.. (2018). THERMO-ELECTRO-MECHANICAL ANALYSIS OF CYLINDRICAL SHELL MADE OF FUNCTIONALLY GRADED PIEZOELECTRIC MATERIALS USING ARBITRARY HIGHER-ORDER SHEAR DEFORMATION THEORY. MECHANICAL ENGINEERING SHARIF (SHARIF: MECHANICAL ENGINEERING), 34-3(1 ), 125-135. SID. https://sid.ir/paper/406524/en

Vancouver: Copy

JABBARI M., ZAMANI NEJAD M.. THERMO-ELECTRO-MECHANICAL ANALYSIS OF CYLINDRICAL SHELL MADE OF FUNCTIONALLY GRADED PIEZOELECTRIC MATERIALS USING ARBITRARY HIGHER-ORDER SHEAR DEFORMATION THEORY. MECHANICAL ENGINEERING SHARIF (SHARIF: MECHANICAL ENGINEERING)[Internet]. 2018;34-3(1 ):125-135. Available from: https://sid.ir/paper/406524/en

IEEE: Copy

M. JABBARI, and M. ZAMANI NEJAD, “THERMO-ELECTRO-MECHANICAL ANALYSIS OF CYLINDRICAL SHELL MADE OF FUNCTIONALLY GRADED PIEZOELECTRIC MATERIALS USING ARBITRARY HIGHER-ORDER SHEAR DEFORMATION THEORY,” MECHANICAL ENGINEERING SHARIF (SHARIF: MECHANICAL ENGINEERING), vol. 34-3, no. 1 , pp. 125–135, 2018, [Online]. Available: https://sid.ir/paper/406524/en

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