FAR FIELD SOLUTION OF SH-WAVE SCATTERED BY AN INTERFACE CYLINDRICAL INCLUSION WITH DISCONNECTED CURVE
界面脱胶圆夹杂对SH波散射的远场解

This paper investigates the far field solution of SH-wave scattered by an interface cylindrical inclusion with a disconnected curve near bi-media material by use of Green's function method and complex function method. First, along the interface of bi-media material, we divide the space into up and down parts. In the down part, a suitable Green's function for the present problem is constructed, which is the essential solution of the displacement field due to the out-plane harmonic line source load at the horizontal surface. Then in the up part, a suitable Green's function is used. Thereby the semicircular disconnected curve can be constructed when the two parts are bonded to be continuous in the interface impacted by SH-wave. And the expressions of the displacement field and the stress field are obtained and the integral equation is set up under this situation. The displacement mode of scattered wave at far field and scattering cross-section is obtained. Numerical results are illustrated and the influence of different parameters at far field is discussed. It is found that the displacement and scattering cross-section can be enlarged by the disconnected curve.