摘要
运用Ｇｒｅｅｎ函数法求解ＳＨ波对界面圆柱形弹性夹杂的散射。首先，给出含有半圆柱形弹性夹杂的弹性半空间表面上任意一点、承受时间谐和的出平面线源荷载作用时的位移函数。其次，取该位移函数作为Ｇｒｅｅｎ函数，推导出定解积分方程。最后，给出介质参数对界面圆柱形弹性夹杂的动应力集中系数的影响。
Green’s function method is introduced to investigate the problem of SH wave scattering and dynamic stress concentration in bi material structure possessing cylindrical interface elastic inclusion.Displacement function for an elastic half space with half cylindrical elastic inclusion bearing steady state line source force on horizontal surface is first given.Regarding the bi material structure as two half spaces bounded by horizontal surfaces and looking upon the above displacement function as Green’s function,the integral equations can be obtained by use of continuity conditions at the interface.Finally,numerical examples of dynamic stress concentration are given,and the relations of dynamic stress concentration factors versus different media combinations are illustrated.
出处
《爆炸与冲击》
EI
CAS
CSCD
北大核心
1999年第2期115-123,共9页
Explosion and Shock Waves
基金
国家自然科学基金
国家教委博士点基金
关键词
界面圆柱形
弹性夹杂
SH波散射
动应力集中
interface cylindrical elastic inclusion, Green’s function, SH wave scattering, dynamic stress concentration
