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Modeling the mechanics and rheology of porous and granular media: an elastoplastic continuum approach

Related publications (66)

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Numerical simulation of gravel unconstrained flow experiments: A comparison between DAN-3D and RASH-3D codes

Vincent Labiouse, Claire Sauthier

Four gravel unconstrained flow experiments were modelled with the DAN-3D and RASH-3D codes. Both the codes, based on continuum mechanics, were developed for the propagation of rapid landslides, like rock avalanches. The codes were at first run to back-calc ...

CRC Press/Balkema2010

Failure in multiphase geomaterias

Lyesse Laloui

The contributions assembled in the present volume proceed from the lectures of the 2009 ALERT Geomaterials School devoted to the Failure in the multiphase geomaterials. The multiphase behaviour of geomaterials used to be mainly considered from the point of ...

2009

Fast Identification of Poroelastic Parameters from Indentation Tests

Matteo Galli

A novel approach is presented for the identification of constitutive parameters of linear poroelastic materials from indentation tests. Load-controlled spherical indentation with a ramp-hold creep profile is considered. The identification approach is based ...

2009

Thermo-plasticity of fine-grained soils at various saturation states

Bertrand François

Soil is a particulate material that may undergo irreversible strain as the relative positions of the constituent particles change. That irreversible behaviour may be induced not only by an external stress variation but also by temperature or suction change ...

EPFL2008

New basis for the constitutive modelling of aggregated soils

Lyesse Laloui, Laurent Vulliet, Azad Koliji

Natural and compacted soils are usually characterized by aggregation of particles. The mechanical behaviour of these materials depends on soil structure. The oedometric compression tests performed on aggregated samples presented here showed that these mate ...

Springer-Verlag2008

Application of the Rappaz-Drezet-Gremaud Hot Tearing Criterion to Welding of Aluminium Alloys

Jean-Marie Drezet

Hot tearing, a severe defect occurring during solidification is the conjunction of tensile stresses which are transmitted to the mushy zone by the coherent solid underneath and of insufficient liquid feeding to compensate for the volumetric change. The RDG ...

Th. Böllinghaus, H. Herold, C. E. Cross and J.C Lippold2008

Mechanical behaviour of unsaturated aggregated soils

Azad Koliji

Particle aggregation is a commonly observed phenomenon in many types of soils, such as natural clays and agricultural soils. These soils contain porous aggregates, often separated by large, interaggregate pores. Two levels of intra- and interaggregate poro ...

EPFL2008

Non-isothermal plasticity model for cyclic behaviour of soils

Lyesse Laloui, Cane Cekerevac

On the one hand, it has been observed that liquefaction- induced shear deformation of soils accumulates in a cycle- by-cycle pattern. On the other hand, it is known that heating could induce plastic hardening. This study deals with the constitutive modelli ...

2008

Numerical simulation of the non-isothermal mechanical behaviour of soils

Lyesse Laloui, Cane Cekerevac

Research interest in the thermo-mechanical behaviour of soils is growing as a result of an increasing number of geomechanical problems involving thermal effects. This paper concerns the constitutive modelling of non- isothermal mechanical behaviour of clay ...

2008

A Lagrangian, stochastic modeling framework for multi-phase flow in porous media

Ivan Lunati, Manav Tyagi

Many of the complex physical processes relevant for compositional multi-phase flow in porous media are well understood at the pore-scale level. In order to study CO2 storage in sub-surface formations, however, it is not feasible to perform simulations at t ...

2008