A porous media finite element approach for soil instability including the second-order work criterion

Autor: Félix Darve, Bernhard A. Schrefler, Evanthia Kakogiannou, Lorenzo Sanavia, François Nicot
Přispěvatelé: Erosion torrentielle neige et avalanches (UR ETGR (ETNA)), Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA), Laboratoire sols, solides, structures - risques [Grenoble] (3SR), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP)-Institut National Polytechnique de Grenoble (INPG)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA), GéoMécanique, Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP)-Institut National Polytechnique de Grenoble (INPG)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP)-Institut National Polytechnique de Grenoble (INPG)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA), Universita degli Studi di Padova, Laboratoire sols, solides, structures - risques [Grenoble] (3SR ), Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes [2016-2019] (UGA [2016-2019])-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ), Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes [2016-2019] (UGA [2016-2019])-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes [2016-2019] (UGA [2016-2019])-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ), UNIVERSITY OF PADUA ITA, Partenaires IRSTEA, Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA), Université Grenoble Alpes [2016-2019] (UGA [2016-2019]), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes [2016-2019] (UGA [2016-2019]), 7th Framework Programme of the European Union (ITN MuMoLaDe project) : 289911University of Padova : 60A09-5709/14
Jazyk: angličtina
Rok vydání: 2016
Předmět:
Effective stress
0211 other engineering and technologies
02 engineering and technology
01 natural sciences
Instability
Displacement (vector)
Multiphase porous media
Stress (mechanics)
Earth and Planetary Sciences (miscellaneous)
Material instability
[SPI.GCIV.RISQ]Engineering Sciences [physics]/Civil Engineering/Risques
Elasto-plasticity
Geotechnical engineering
Boundary value problem
0101 mathematics
Second-order work criterion
ComputingMilieux_MISCELLANEOUS
021101 geological & geomatics engineering
Cavitation
[SPI.GCIV.GEOTECH]Engineering Sciences [physics]/Civil Engineering/Géotechnique
Mechanics
Geotechnical Engineering and Engineering Geology
[SPI.GCIV.CH]Engineering Sciences [physics]/Civil Engineering/Construction hydraulique
Finite element method
010101 applied mathematics
[SDE]Environmental Sciences
Finite element simulation
Landslides
Porous medium
Geology
Zdroj: Acta Geotechnica
Acta Geotechnica, Springer Verlag, 2016, 11 (4), pp.805-825
HAL
Acta Geotechnica, Springer Verlag, 2016, 11 (4), pp.805-825. ⟨10.1007/s11440-016-0473-5⟩
ISSN: 1861-1125
1861-1133
DOI: 10.1007/s11440-016-0473-5⟩
Popis: International audience; This paper deals with the hydromechanical modelling of the initiation of failure in soils with particular reference to landslides. To this end, localized and diffused failure modes are simulated with a finite element model for coupled elasto-plastic variably saturated porous geomaterials, in which the material point instability is detected with the second-order work criterion based on Hill's sufficient condition of stability. Three different expressions of the criterion are presented, in which the second-order work is expressed in terms of generalized effective stress, of total stress and thirdly by taking into account the hydraulic energy contribution for partially saturated materials. The above-mentioned computational framework has been applied to study two initial boundary value problems: shear failure of a plane strain compression test of globally undrained water-saturated dense sand (where cavitation occurs at strain localization) and isochoric grain matter, and the onset of a flowslide from southern Italy due to rainfall (Sarno-Quindici events, May 5-6 1998). It is shown that the second-order work criterion applied at the material point level detects the local material instability and gives a good spatial indication of the extent of the potentially unstable domains in both the localized and diffused failure mechanisms of the cases analyzed, is able to capture the instability induced by cavitation of the liquid water and gives results according to the time evolution of plastic strains and displacement rate.
Databáze: OpenAIRE
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