Scattering of SH-wave by elliptical inclusion with partial debond curve and circular cavity in half space

作者：Qi, Hui; Chen, Hongying^*; Zhang, Ximeng; Zhao, Yuanbo; Xiang, Meng

来源：Explosion and Shock Waves, 2018, 38(6): 1344-1352.

DOI：10.11883/bzycj-2017-0142

• Displacement and stress
• Dynamic stress
• Dynamic stress concentration factor
• Elliptic inclusions
• Infinite system of linear equations
• Partial debond curve
• Scattering of SH-waves
• SH wave

In order to study the scattering problems of SH-wave by elliptical inclusion with partial debond curve and circular cavity in half space. The method of "conformal mapping"is used to map the elliptical inclusions into circular inclusions. The displacement field and the stress field of the elliptical inclusion and circular cavity are obtained by Green's function method with the ridding of image method. Secondly, infinite system of linear equations are established by boundary conditions, which are continuous around the elliptical inclusion with the displacement and stress, and then the unknown coefficients of wave function are solved by the free around circular cavity with stress. Finally, the "partial debond curve model"is constructed, the equal stress with opposite direction is applied in the partial debond curve. By which we obtain the total displacement field of the elliptical inclusion with a partially debond curve and circular in the half space. Numerical examples show that the dynamic stress concentration factor (DSCF) is influenced by the incident angle, the frequency of incident wave, the distance of the defect, the depth of inclusion and the partial debond curve angle.

• 出版日期2018
• 单位哈尔滨工程大学