Boundary effect on multiple scattering of elastic waves in a half-space

被引：1

作者：

Val'kov, A. Yu. ^{[1
,2
]}

Kuzmin, V. L. ^{[1
,2
]}

Romanov, V. P. ^{[1
]}

Nikitina, M. A. ^{[1
]}

Meglinskii, V. ^{[3
,4
]}

机构：

[1] St Petersburg State Univ, Dept Phys, St Petersburg, Russia

[2] St Petersburg State Univ Commerce & Econ, Dept Math, St Petersburg, Russia

[3] Univ Otago, Dept Phys, Dunedin, New Zealand

[4] Saratov NG Chernyshevskii State Univ, Fac Phys, Saratov, Russia

来源：

NANOSYSTEMS-PHYSICS CHEMISTRY MATHEMATICS | 2015年 / 6卷 / 04期

基金：

俄罗斯基础研究基金会;

关键词：

Elastic waves; Boundary effect; Half-space; Multiple scattering; Monte-Carlo simulation;

D O I：

10.17586/2220-8054-2015-6-4-524-536

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The scattering of elastic waves is studied in the vicinity of a vacuum-medium boundary. The Green's function for a half-space is re-derived within the mixed 2D-Fourier representation, which is convenient for studying layered media. Monte-Carlo simulations of elastic wave scattering from random inhomogeneities within a simplified scalar model are performed, accounting for a boundary-induced term in the Green's function. The multiply scattered elastic waves' radiation is shown to decay with distance from the source much slower in vicinity of boundary than in an infinite medium, due to the boundary condition requirements.

引用

页码：524 / 536

页数：13

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