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Analytical solutions for dynamic pressures of coupling fluid–porous medium–solid due to SV wave incidence
Author(s) -
Wang JinTing,
Zhang ChuHan,
Jin Feng
Publication year - 2009
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.773
Subject(s) - porous medium , porosity , mechanics , poromechanics , coupling (piping) , displacement (psychology) , materials science , reflection (computer programming) , angle of incidence (optics) , geotechnical engineering , geology , optics , composite material , physics , psychology , computer science , psychotherapist , programming language
This paper presents the results of theoretical investigation on the dynamic coupling of an ideal fluid‐porous medium‐elastic half‐space system subjected to SV waves to study the effect of sediment on the seismic response of dams for reservoirs that are deposited with a significant amount of sediment after a long period of operation. The effects of the porous medium and the incident wave angle on dynamic pressures in the overlying ideal fluid are analyzed, and the reflection and transmission coefficients of the wave at the material interfaces are derived using an analytical solution in terms of displacement potentials. The numerical test of modeling shows that the dynamic pressures significantly depend on the properties of porous medium. The fully saturated porous medium reduces the response peaks slightly, while the partially saturated porous medium causes a considerable increase in the resonance peaks. Copyright © 2009 John Wiley & Sons, Ltd.