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Boundary Conditions for finite element analysis combined with geometrical theory of diffraction

Abstract : In this paper a method is presented to enforce boundary conditions for a Finite Element (FE) analysis when free space or large external scatterers are present. The equivalence theorem is used to divide the original problem into an internal and an external part via introduction of equivalent sources. FE analysis solves the internal problem with standard metallic or magnetic boundary conditions while an asymptotic method, here the uniform version of the Geometrical Theory of Diffraction (GTD), deals with the external scatterers. A time harmonic variation of the fields is assumed.
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Submitted on : Tuesday, January 21, 2014 - 3:29:34 PM
Last modification on : Tuesday, February 11, 2020 - 2:00:14 PM

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Benoit Roturier, Bernard Souny, Henri Baudrand. Boundary Conditions for finite element analysis combined with geometrical theory of diffraction. IEEE Transactions on Magnetics, Institute of Electrical and Electronics Engineers, 1995, 31 (3), pp 1542-1545. ⟨10.1109/20.376324⟩. ⟨hal-00934012⟩

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