Abstract
In this paper, the three-dimensional coupled fields in simply supported solid and annular circular piezothermoelastic plates subjected to uniform coupled load are solved and expressed in elementary functions. For this object, the general solutions of Chen [1] for transversely isotropic piezothermoelastic materials are rewritten to a non-dimensional form. Then, the coupled field in hollow circular plates can be obtained by virtue of four constructed harmonic functions and the non-dimensional general solutions. This solution can be degenerated to the corresponding ones of solid circular plate. At last, the numerical results of coupled fields in cadmium selenide annular circular plate, including displacements, stresses, electric potential and electric displacements, are presented in details. And the displacement, stress and temperature increase induced by thermal-mechanical loadings are compared with those obtained for the same material where the piezoelectric and pyroelectric effects are ignored.
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