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Scattering of In-pl...
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Boström, Anders E,1951Chalmers tekniska högskola,Chalmers University of Technology
(författare)
Scattering of In-plane Elastic Waves by an Anisotropic Circle
- Artikel/kapitelEngelska2018
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2018-01-06
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Oxford University Press (OUP),2018
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LIBRIS-ID:oai:research.chalmers.se:0d9198ef-03c5-433f-b830-f7d859d663f7
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https://research.chalmers.se/publication/503737URI
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https://doi.org/10.1093/qjmam/hbx029DOI
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Språk:engelska
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Sammanfattning på:engelska
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The 2D scattering of in-plane elastic waves by a circle is considered when the surrounding medium is isotropic and the medium inside the circle is anisotropic (orthotropic). The equations inside the circle are transformed to polar coordinates and then depend explicitly on the azimuthal angle through trigonometric functions. Making expansions in trigonometric series in the azimuthal coordinate give a coupled system of ordinary differential equations in the radial coordinate that is solved by power series expansions. With the solution inside the circle complete the scattering problem is solved essentially as in the classical case. The elements of the transition (T) matrix of the circle are given explicitly for low frequencies (long wavelengths). For low frequencies some numerical examples are given showing the strong influence of anisotropy.
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Chalmers tekniska högskola
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Ingår i:Quarterly Journal of Mechanics and Applied Mathematics: Oxford University Press (OUP)71:2, s. 139-1550033-56141464-3855
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