【摘要】 研究了ＳＨ波绕界面圆孔散射的波函数展开理论。由入射，反射和透射波组成的自由波场与孔 的散射场叠加成总波场．将定义于两个半平面的散射场按一定方式延拓到全平面，通过 Ｈａｎｋｅｌ—Ｆｏｕｒｉｅｒ型积分来满足界面与孔缘处的边界条件，得到了确定待定系数的封闭代数方程组．给 出了具体算例，计算了在孔缘处的动应力集中系数分布．更多还原

【Abstract】 The theory of wave functions expansion applied to scattering problems of SH-wave by an interface circular cavity is investigated. The center of the cavity is located at the interface of two elastic media. The total wave field is obtained by superposition of free field and scattering fields. The free one is composed of incident, reflection and refraction waves. The key point is to extend the scattering fields from their half- plane domains into the full plane domains by the certain way. The boundary conditions on the interface and around the cavity are satisfied by the method of Hankel-Fourier integral. A closed set of algebraic equations containing the coefficients of Hankel - Fourier series is deduced. Some numerical results about distribution of coefficients of dynamic stress concentration around the cavity are given in this paper.更多还原