半空间夹杂物对弹性波散射的有限元法求解

The scattering of half-space inhomogeneous body to elastic wave

针对半空间弹性夹杂对弹性波的散射问题,采用波动有限元方法,结合粘弹性边界,进行求解分析,研究表明:半空间中弹性夹杂对弹性波的散射同全空间情况存在很大差别,弹性夹杂对附近位移幅值有着显著影响,但影响规律随着介质软硬程度发生较大变化。

According to the scattering problem of half-space inhomogeneous body to elastic wave, this paper used wave finite element method, combined with viscoelasticity boundary, made solution analysis, the research showed that the scattering of half-space inhomogeneous body to elas- tic wave had great difference to whole space, the inhomogeneous body had significant impact on nearby displacement amplitude, but the influence law had great changes regularity with medium hardness degree.