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http://dx.doi.org/10.12989/sem.2011.40.1.049

Investigation on electromagnetothermoelastic interaction of functionally graded piezoelectric hollow spheres  

Dai, Hong-Liang (State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body, Hunan University)
Rao, Yan-Ni (State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body, Hunan University)
Publication Information
Structural Engineering and Mechanics / v.40, no.1, 2011 , pp. 49-64 More about this Journal
Abstract
An analytical method is presented to investigate electromagnetothermoelastic behaviors of a hollow sphere composed of functionally graded piezoelectric material (FGPM), placed in a uniform magnetic field, subjected to electric, thermal and mechanical loads. For the case that material properties obey an identical power law in the radial direction of the FGPM hollow sphere, exact solutions for electric displacement, stresses, electric potential and perturbation of magnetic field vector in the FGPM hollow sphere are determined by using the infinitesimal theory of electromagnetothermoelasticity. Some useful discussion and numerical examples are presented to show the significant influence of material inhomogeneity. The aim of this research is to understand the effect of composition on electromagnetothermoelastic stresses and to design optimum FGPM hollow spheres.
Keywords
functionally graded piezoelectric material (FGPM); hollow sphere; analytical method; electromagnetothermoelastic; perturbation of magnetic field vector;
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