Magneto-Thermo-Elastic Stresses and Perturbation of the Magnetic Field Vector in an EGM Rotating Disk

Subject Areas : Engineering

A Ghorbanpour Arani ¹ , M Azamia ² , H Sepiani ³

1 - Department of Mechanical Engineering, Faculty of Engineering, University of Kashan
2 - Department of Mechanical Engineering, Faculty of Engineering, University of Kashan
3 - Department of Mechanical Engineering, Faculty of Engineering, University of Tehran

Received: 2010-05-17 Accepted : 2010-07-20 Published : 2010-06-30

Keywords: Rotating disk, EGM, Magneto-thermo-elastic, Perturbation of Magnetic Field Vector,

Abstract :

In this article, the magneto-thermo-elastic problem of exponentially graded material (EGM) hollow rotating disk placed in uniform magnetic and temperature fields is considered. Exact solutions for stresses and perturbations of the magnetic field vector in EGM hollow rotating disk are determined using the infinitesimal theory of magneto-thermo-elasticity under plane stress. The material properties, except Poisson’s ratio, are assumed to depend on variable of the radius and they are expressed as exponential functions of radius. The direct method is used to solve the heat conduction and Hyper-geometric functions are employed to solve Navier equation. The temperature, displacement, and stress fields and the perturbation of the magnetic field vector are determined and compared with those of the homogeneous case. Hence, the effect of in-homogeneity on the stresses and the perturbation of magnetic field vector distribution are demonstrated. The results of this study are applicable for designing optimum EGM hollow rotating disk.

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