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Article Dans Une Revue Computers and Geotechnics Année : 2019

Hybrid asynchronous absorbing layers based on Kosloff damping for seismic wave propagation in unbounded domains

Résumé

This paper presents a novel approach for modeling infinite media, called Hybrid (different time integrators) Asynchronous (different time steps) Kosloff Absorbing Layers with Increasing Damping (HA-Kosloff ALID). By using strong forms of wave propagation in Kosloff media, its design equation is derived as well as optimal conditions between physical and absorbing domains. Explicit/Implicit co-simulation is adopted to reduce computation time. Examples of semi-infinite bar and Lamb’s test are implemented to illustrate the efficiency of our approach in terms of accuracy and CPU time, in comparison to Rayleigh ALID and PML. It turns out to be efficient and convenient for modeling unbounded domain.
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Dates et versions

hal-02069684 , version 1 (21-10-2021)

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Paternité - Pas d'utilisation commerciale

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Sijia Li, Michael Brun, Irini Djeran-Maigre, Sergey Kuznetsov. Hybrid asynchronous absorbing layers based on Kosloff damping for seismic wave propagation in unbounded domains. Computers and Geotechnics, 2019, 109, pp.69-81. ⟨10.1016/j.compgeo.2019.01.019⟩. ⟨hal-02069684⟩
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