000009659 001__ 9659
000009659 005__ 20141205153141.0
000009659 04107 $$aeng
000009659 046__ $$k2008-10-12
000009659 100__ $$aChaillat, Stephanie
000009659 24500 $$aDiffraction of Seismicwaves from 3-D Canyons and Alluvial Basins Modeled Using the Fast Multipole-Accelerated BEM

000009659 24630 $$n14.$$pProceedings of the 14th World Conference on Earthquake Engineering
000009659 260__ $$b
000009659 506__ $$arestricted
000009659 520__ $$2eng$$aThe analysis of seismic wave propagation and amplification in complex geological structures raises the need for efficient and accurate numerical methods. The solution of the elastodynamic equations using boundary element methods (BEMs) gives rise to fully-populated matrix equations. Earlier investigations on the elastodynamic equations have established that the Fast Multipole (FM) method reduces the complexity of a BEM solution to N log N per GMRES iteration. The present Article addresses the extension of the FM-BEM strategy to 3D multi-domain elastodynamics in the frequency domain. Using this FM-accelerated BEM it is now possible to study the propagation of seismic waves in 3-D alluvial basins at a much lower cost than with standard BEM. Validations are performed for canonical basins and comparisons to previous works are proposed. It shows the efficiency and accuracy of the fast BEM formulation proposed.

000009659 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000009659 653__ $$asite effects, boundary element method, seismic wave amplification, Fast Multipole Method

000009659 7112_ $$a14th World Conference on Earthquake Engineering$$cBejing (CN)$$d2008-10-12 / 2008-10-17$$gWCEE15
000009659 720__ $$aChaillat, Stephanie$$iBonnet, Marc$$iSemblat, Jean-Francois
000009659 8560_ $$ffischerc@itam.cas.cz
000009659 8564_ $$s142069$$uhttps://invenio.itam.cas.cz/record/9659/files/03-03-0016.pdf$$yOriginal version of the author's contribution as presented on CD, Paper ID: 03-03-0016.
000009659 962__ $$r9324
000009659 980__ $$aPAPER