Finite element analysis of the initiation of landslides with a multiphase model

L. Sanavia, B. A. Schrefler

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations

Abstract

Finite element analysis of the initiation of landslides due to capillary andwater pressure variation is presented. To this aim, a non-isothermal elasto-plastic multiphase material model for soils is used. Soils are modeled as a three-phase deforming porous continuum where heat, water and gas flow are taken into account. In particular, the gas phase is modeled as an ideal gas composed of dry air and water vapor. Phase changes of water (evaporation- condensation, adsorption-desorption), heat transfer through conduction and convection and latent heat transfer are considered. The macroscopic balance equations are discretized in space and time within the finite element method. The independent variables are the solid displacements, the capillary and the gas pressure and the temperature. The effective stress state is limited by Drucker-Prager yield surface for simplicity. Small strains and quasi-static loading conditions are assumed. Numerical results of a slope stability experiment are presented assuming plane strain condition during the computations.

Original languageEnglish (US)
Title of host publicationPoromechanics III
Subtitle of host publicationBiot Centennial (1905-2005) - Proceedings of the 3rd Biot Conference on Poromechanics
Pages397-402
Number of pages6
StatePublished - Dec 1 2005
Event3rd Biot Conference on Poromechanics - var.pagings, United States
Duration: May 24 2005May 27 2005

Other

Other3rd Biot Conference on Poromechanics
CountryUnited States
Cityvar.pagings
Period5/24/055/27/05

ASJC Scopus subject areas

  • Mechanics of Materials

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