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- W2012029480 abstract "We present and analyze a perfectly matched, absorbing layer model for the velocity‐stress formulation of elastodynamics. The principal idea of this method consists of introducing an absorbing layer in which we decompose each component of the unknown into two auxiliary components: a component orthogonal to the boundary and a component parallel to it. A system of equations governing these new unknowns then is constructed. A damping term finally is introduced for the component orthogonal to the boundary. This layer model has the property of generating no reflection at the interface between the free medium and the artificial absorbing medium. In practice, both the boundary condition introduced at the outer boundary of the layer and the dispersion resulting from the numerical scheme produce a small reflection which can be controlled even with very thin layers. As we will show with several experiments, this model gives very satisfactory results; namely, the reflection coefficient, even in the case of heterogeneous, anisotropic media, is about 1% for a layer thickness of five space discretization steps." @default.
- W2012029480 created "2016-06-24" @default.
- W2012029480 creator A5050003174 @default.
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- W2012029480 date "2001-01-01" @default.
- W2012029480 modified "2023-10-16" @default.
- W2012029480 title "Application of the perfectly matched absorbing layer model to the linear elastodynamic problem in anisotropic heterogeneous media" @default.
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- W2012029480 doi "https://doi.org/10.1190/1.1444908" @default.
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