Abstract
With the aid of guided wave theory, the scattering of SH guided wave by a circular inclusion in an infinite piezoelectric bi-material strip is considered. Firstly, a harmonic out-of-plane line source force is applied on the vertical boundary of a strip. By the means of the repeated image superposition method, Green’s function is constructed, which satisfies the stress-free and electric insulation conditions on the upper and lower horizontal boundaries. Secondly, the bi-material media is divided into two parts along the vertical boundary, and a pair of anti-plane forces and a pair of in-plane electric fields are applied on the vertical boundary. According to boundary conditions, the first kind of Fredholm integral equations are established by ‘the conjunction method’, then the integral equations are reduced to the algebraic equations by effective truncation. Finally, the dynamic stress concentration factor (DSCF) and electric field intensity concentration factor (EFICF) around the circular inclusion are calculated, besides, the influences of the order of guided wave, the position of the inclusion, the combination of parameters, etc. on the DSCF and EFICF are discussed.
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