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Paper Information

Journal:   JOURNAL OF SOLID MECHANICS   SUMMER 2011 , Volume 3 , Number 3; Page(s) 244 To 257.
 
Paper: 

EXACT SOLUTION FOR ELECTROTHERMOELASTIC BEHAVIORS OF A RADIALLY POLARIZED FGPM ROTATING DISK

 
 
Author(s):  GHORBANPOUR ARANI A.*, JAFARZADEH JAZI A., ABDOLLAHIAN M., MOZDIANFARD M.R., MOHAMMADIMEHR M., AMIR S.
 
* FACULTY OF MECHANICAL ENGINEERING, UNIVERSITY OF KASHAN, KASHAN, ISLAMIC REPUBLIC OF IRAN
 
Abstract: 

This article presents an exact solution for an axisymmetric functionally graded piezoelectric (FGP) rotating disk with constant thickness subjected to an electric field and thermal gradient. All mechanical, thermal and piezoelectric properties except for Poisson's ratio are taken in the form of power functions in radial direction. After solving the heat transfer equation, first a symmetric distribution of temperature is produced. The gradient of displacement in axial direction is then obtained by assuming stress equation in axial direction to be zero. The electric potential gradient is attained by charge and electric displacement equations. Substituting these terms in the equations for the dimensionless stresses in the radial and circumferential directions yield these stresses and using them in the mechanical equilibrium equation a nonhomogeneous second order differential equation is produced that by solving it, the dimensionless displacement in radial direction can be achieved. The study results for a FGP rotating hollow disk are presented graphically in the form of distributions for displacement, stresses and electrical potential.

 
Keyword(s): ELECTROTHERMOELASTIC, FGPM, RADIALLY POLARIZED, ROTATING DISK
 
References: 
 
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