High-performance finite-element simulations of seismic wave propagation in three-dimensional nonlinear inelastic geological media

We present finite-element numerical simulations of seismic wave propagation in non linear inelastic geological media. We demonstrate the feasibility of large-scale modeling based on an implicit numerical scheme and a nonlinear constitutive model. We illustrate our methodology with an application to...

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Veröffentlicht in:Parallel computing Jg. 36; H. 5; S. 308 - 325
Hauptverfasser: Dupros, Fabrice, De Martin, Florent, Foerster, Evelyne, Komatitsch, Dimitri, Roman, Jean
Format: Journal Article
Sprache:Englisch
Veröffentlicht: Elsevier B.V 01.06.2010
Schlagworte:
Computer simulation
Finite-element method
Mathematical analysis
Mathematical models
Media
Methodology
Nonlinear soil behaviour
Nonlinearity
Parallel sparse direct solver
Seismic numerical simulation
Seismic waves
Wave propagation
Finite-element method
Parallel sparse direct solver
Seismic numerical simulation
Nonlinear soil behaviour
ISSN:0167-8191, 1872-7336
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Zusammenfassung:We present finite-element numerical simulations of seismic wave propagation in non linear inelastic geological media. We demonstrate the feasibility of large-scale modeling based on an implicit numerical scheme and a nonlinear constitutive model. We illustrate our methodology with an application to regional scale modeling in the French Riviera, which is prone to earthquakes. The PaStiX direct solver is used to handle large matrix numerical factorizations based on hybrid parallelism to reduce memory overhead. A specific methodology is introduced for the parallel assembly in the context of soil nonlinearity. We analyse the scaling of the parallel algorithms on large-scale configurations and we discuss the physical results.
Bibliographie:ObjectType-Article-2
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ISSN:0167-8191
1872-7336
DOI:10.1016/j.parco.2009.12.011