Scattering of SH-wave by multiple semi-cylindrical hills above a subsurface elastic cylindrical inclusion

摘要

Using the complex function and moving coordinates,an analytical method is developed for scattering of SH-wave by multiple semi-cylindrical hills above a subsurface elastic cylindrical inclusion.The whole model is divided into two parts.Part Ⅰ is composed of multiple circular domains which include the boundaries of multiple hills;all the rest can be considered as part Ⅱ.The displacement solutions that satisfy the boundary conditions are constructed in two parts respectively.Then two parts are matched up on common boundary by moving coordinates.Thus a set of infinite algebraic equations about problem can be obtained.The computational results are provided to show the influence of distance between two hills and the buried depth of inclusion on surface displacement.