界面可移动圆柱形刚性夹杂对SH波散射及动应力集中

Scattering and dynamic stress concentration of SH-wave by removable rigid cylindrical interface inclusion

利用Green函数方法求解界面可移动圆柱形刚性夹杂对SH波的散射问题。首先给出了带有半圆柱形刚性夹杂的弹性半空间水平面上任一点承受时间谐和的出平面线源荷载作用时的位移解。其次,将此移解答为Green函数,推导界面可移动圆柱形刚性夹杂对SH波散射问题定解积分方程。最后,给出不同介质参数对界面可移动圆柱形刚性夹杂的动应力集中系数的影响。

Presents the develop ment of a suitable Green's Function,which can be used as a funda-mental solution of displacement field for an elastic half space with a half removable rigid cylindrical inclusion under an out-plane harmonic line source load subjected at any point on its horizontal sur-face,and details the solution of the above scattering problem derived from the special Green's Func-tion develped.Describes the setting up of a series of Fredholm integral equations of the first kind to determine the field of scattering by use of the Green's Function and finally,illustrates with numerical examples the effects of different media parameters on dynamic stress concentration factors(DSCF).