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http://dx.doi.org/10.12989/sss.2014.13.1.001

Application of shear deformation theory for two dimensional electro-elastic analysis of a FGP cylinder  

Arefi, M. (Department of Solid Mechanic, Faculty of Mechanical Engineering, University of Kashan)
Rahimi, G.H. (Department of Mechanical engineering, Tarbiat Modares University)
Publication Information
Smart Structures and Systems / v.13, no.1, 2014 , pp. 1-24 More about this Journal
Abstract
The present study deals with two dimensional electro-elastic analysis of a functionally graded piezoelectric (FGP) cylinder under internal pressure. Energy method and first order shear deformation theory (FSDT) are employed for this purpose. All mechanical and electrical properties except Poisson ratio are considered as a power function along the radial direction. The cylinder is subjected to uniform internal pressure. By supposing two dimensional displacement and electric potential fields along the radial and axial direction, the governing differential equations can be derived in terms of unknown electrical and mechanical functions. Homogeneous solution can be obtained by imposing the appropriate mechanical and electrical boundary conditions. This proposed solution has capability to solve the cylinder structure with arbitrary boundary conditions. The previous solutions have been proposed for the problem with simple boundary conditions (simply supported cylinder) by using the routine functions such as trigonometric functions. The axial distribution of the axial displacement, radial displacement and electric potential of the cylinder can be presented as the important results of this paper for various non homogeneous indexes. This paper evaluates the effect of a local support on the distribution of mechanical and electrical components. This investigation indicates that a support has important influence on the distribution of mechanical and electrical components rather than a cylinder with ignoring the effect of the supports. Obtained results using present method at regions that are adequate far from two ends of the cylinder can be compared with previous results (plane elasticity and one dimensional first order shear deformation theories).
Keywords
piezoelectric; pressure; cylindrical shell; first order shear deformation theory; energy method;
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Times Cited By KSCI : 3  (Citation Analysis)
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