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This paper investigates SH waves reflection in the PMN-PT piezoelectric half space. The PMN-PT piezoelectric crystals are being polarized along [011]c of the cubic reference directions so that the effective macroscopic symmetries is mm2. The surface of the PMN-PT piezoelectric half spaces is mechanically free, and the electric boundary conditions are electrically open and shorted. The results show...
In this paper, we analyze SH waves propagating in the layered structure consisting of a functionally graded piezoelectric (PE) layer and a piezomagnetic (PM) half-space, where the surface of the PE layer is electrically and magnetically open. The solution of the coupled fields and the dispersion relation are derived. The numerical results are given to show the effect of the gradient coefficient and...
This paper investigates Love waves propagating in the layered plate structure consisting of a piezomagnetic layer and an orthotropic piezoelectric half space. The Love waves can propagate in the resulting structure and the dispersion relations of the Love waves are obtained. In the case of a Terfenol-D layer over a KNbO3 substrate, the wave exists at any rotated cut. The results showed that the phase...
We analyze the propagation of gap waves between two half-spaces of functionally graded piezoelectric materials (FGPM). The material properties of the half-spaces vary in the direction perpendicular to their surfaces. It is found that there exist waves that can propagate in the gap and near the surfaces of the half-spaces. The speed of these waves is sensitive to the thickness of the gap and the material...
The multiple scattering of shear waves and dynamic stress resulting from a subsurface cylindrical inclusion in a functionally graded material (FGM) layer bonded to homogeneous materials are investigated, and the analytical solution of this problem is derived. Image method is used to satisfy the traction free boundary condition of the FGM layer. The analytical solutions of wave fields around the actual...
This paper investigates the thickness-twist waves propagating in an infinite piezoelectric-piezomagnetic bi-material plate. The upper and lower surfaces of the plate are assumed to be mechanically free, electrically open and magnetically closed. The exact solutions of the thickness-twist waves are derived. As an example, for the propagation of the thickness-twist waves in the bi-material plate consisting...
The electro-elastic interaction of a piezoelectric screw dislocation with interface is considered. The surface of layers is assumed to be mechanically free and electrically open. The electro-elastic fields have been given explicitly by using the perturbation concept and the method of Laurent series expansion. Based on the derived solutions, numerical examples are given to illustrate the influences...
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