貫通き裂を有する傾斜機能圧電セラミックス厚板の電気熟弾性相互干渉

概要

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In this study the theoretical analysis of a thermoelectroelasticity problem is developed for a piezoelectric plate due to thermal loading under a uniform electric field and a fixed grip condition. The plate is a functionally graded material, meaning that its thermo-electro-mechanical properties are assumed to be continuous functions of the thickness coordinate. The plate contains an embedded or an edge crack perpendicular to its boundaries. The Fourier transform technique is used to formulate the problem in terms of a singular integral equation. The singular integral equation is solved by using the Gauss-Jacobi integration formula. Numerical calculations are carried out, and the mode I stress intensity factors and energy density factors are presented for embedded as well as edge crack for various values of dimensionless parameters representing the size and location of the crack, the material nonhomogeneity, the surface temperatures and the loading combinations.
2004-06-25