Premium
Seismic response of slopes subjected to incident SV wave by an improved boundary element approach
Author(s) -
Gatmiri Behrouz,
Nguyen KhoaVan,
Dehghan Kaveh
Publication year - 2006
Publication title -
international journal for numerical and analytical methods in geomechanics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.419
H-Index - 91
eISSN - 1096-9853
pISSN - 0363-9061
DOI - 10.1002/nag.578
Subject(s) - computation , boundary element method , time domain , boundary (topology) , truncation (statistics) , surface (topology) , wavelength , boundary value problem , element (criminal law) , reduction (mathematics) , geometry , geology , finite element method , structural engineering , mathematics , mathematical analysis , engineering , physics , optics , computer science , algorithm , statistics , law , political science , computer vision
In this paper, an improved boundary element approach for 2D elastodynamics in time‐domain is presented. This approach consists in the truncation of time integrations, based on the rapid decrease of the fundamental solutions with time. It is shown that an important reduction of the computation time as well as the storage requirement can be achieved. Moreover, for half‐plane problems, the size of boundary element (BE) meshes and the computation time can be significantly reduced. The proposed approach is used to study the seismic response of slopes subjected to incident SV waves. It is found that large amplifications take place on the upper surface close to the slope, while attenuations are produced on the lower surface. The results also show that surface motions become very complex when the incident wavelength is comparable with the size of the slope or when the slope is steep. Copyright © 2006 John Wiley & Sons, Ltd.