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- Boström, Anders E, 1951, et al.
(author)
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Elastic wave scattering by a three-dimensional inhomogeneity in an elastic half space
- 1980
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In: Wave Motion. - 0165-2125. ; 2, s. 335-353
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Journal article (peer-reviewed)abstract
- In this paper we will consider scattering of elastic waves in a half space. The half space is an isotropic, linear and homogeneous medium except for a finite inhomogeneity. The T-matrix method (also called the "extended boundary condition method" or "null field approach") is extended to derive expressions for the elastic field inside the half space and the surface field on the interface. The assumptions on the source that excites the half space are fairly weak. In the numerical applications found in this paper we assume a Rayleigh surface wave to be the incoming field, and we only compute the surface displacements. We make illustrations on some simple type of scatterers (spheres and spheroids; the latter ones can be arbitrarily oriented).
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| 2. |
- Boström, Anders E, 1951, et al.
(author)
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Scattering of a pulsed Rayleigh wave by a spherical cavity in an elastic half space
- 1983
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In: Wave Motion. - 0165-2125. ; 5, s. 137-143
-
Journal article (peer-reviewed)abstract
- The time-dependant scattering by a spherical cavity in an elastic half space is considered. The incoming wave is a pulsed Rayleigh wave. The stationary part of the problem is solved by the T-matrix method, and an integration in frequency is perforemd with a modified gaussian weight function. The displcsement components at some points on the surface of the half space are computed and shown in a number of plots.
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