Scattering of a plane harmonic SH-wave and dynamic stress concentration for multiple multilayered inclusions embedded in an elastic half-space.

摘要

The scattering of a plane harmonic SH-wave by an arbitrary number of layered inclusions in a half-space is investigated by a direct boundary integral equation method. The inclusions, which have arbitrary shape and arrangement, are embedded within an elastic half-space. The effects of multiple scattering, the geometry, and the impedance contrast of the materials for layered inclusions and pipes, on the surface motion, are considered in detail.;Additionally, a non-hypersingular technique is employed to calculate the dynamic stress concentration factor along the interfaces of inclusions. Various contributing factors that can influence the stress concentration, including multiple scattering, the impedance contrast of layers, and the separation distance between the scatterers, are investigated. The numerical results are presented for a wide range of parameters present in the problem.