Diffraction of plane sh waves in a half‐space
Diffraction of plane sh waves in a half‐space
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DOI：
10.1002/eqe.4290100402
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发表时间：
1982-07
影响因子：
4.5
通讯作者：
A. H. Shah;K. C. Wong;S. Datta
中科院分区：
文献类型：
--
作者：
A. H. Shah;K. C. Wong;S. Datta
研究了均匀各向同性弹性半无限介质中表面缺陷和近表面缺陷对二维反平面横波的散射。这里的注意力集中在中长波长范围内。本文采用有限元与解析相结合的方法研究了半圆形峡谷和三角形峡谷的散射问题。前一种情况的结果与已知的精确解进行了比较，后一种情况的结果与一些可用的近似解进行了比较。最后研究了三角形峡谷及其附近圆形隧道的多重散射问题。数值结果显示了多次散射和不同入射角的影响。这些结果对地震工程具有重要意义。
Scattering of antiplane shear waves (SH) in two dimensions by surface and near-surface defects in a homogeneous, isotropic elastic semi-infinite medium has been studied. Attention has been focused here in the range of medium to long wavelengths. A combined finite element and analytical technique has been used to study the problems of scattering by semi-circular and triangular canyons. The results for the former case are compared with the known exact solution and those for the latter case are compared with some available approximate solutions. Finally a problem of multiple scattering by a triangular canyon and a nearby circular tunnel is studied. Numerical results are presented showing the effects of multiple scattering and different angles of incidence. These results are of interest in earthquake engineering.