Strain localisation simulation in non-isothermal multiphase geomaterials
A coupled finite element formulation for the hydro-thermo-mechanical behaviour of a water saturated and partially saturated porous material has been presented. This model is obtained as a result of a research in progress on the thermo-hydro-mechanical modelling for multiphase geomaterials undergoing inelastic strains. Numerical results of strain localisation in globally undrained samples of dense and medium dense sands have been presented. Vapour pressure below the saturation water pressure (i.e. water cavitation) develops at localisation in case of dense sands, as experimentally observed. A case of strain localisation induced by a thermal load in a sample where the displacements are constrained and evaporation takes place is also analysed.
KeywordsShear Band Capillary Pressure Relative Permeability Dense Sand Latent Heat Transfer
Unable to display preview. Download preview PDF.
- 1.Lewis R.W, Schrefler B.A (1998) The Finite Element Method in the Static and Dynamic Deformation and Consolidation of Porous Media. John WileyGoogle Scholar
- 4.Vardoulakis J, Sulem J. (1995) Bifurcation Analysis in Geomechanics, Blakie Academic and Professional, LondonGoogle Scholar
- 6.Diebels S, Ehlers W, Ellsiepen P, Volk W (1998) On the regularization of shear band phenomena in liquid-saturated and empty Soils. In: Proc. Euromech Colloquium 378 on Nonlocal Aspects in Solid Mechanics, University of Mulhouse, Brillard A, Ganghoffer J F (eds) 58–63Google Scholar
- 10.Schrefler B.A, Sanavia L, Gawin D (1998) Modelling of strain localisation in fully saturated soils. In: Adachi T, Oka F, Yashima A. (eds) Balkema RotterdamGoogle Scholar
- 11.Hassanizadeh M, Gray W.G (1979) Adv Water Res 2:1–14Google Scholar
- 12.Hassanizadeh M, Gray W.G (1979) Adv Water Res 2:17–29Google Scholar