Concept

Dilatancy (granular material)

Related publications (55)

Modeling the Onset of Shallow Landslides in Partially Saturated Slopes Subjected to Rain Infiltration

Lyesse Laloui, Mathieu Nuth, John Eichenberger

Heavy rainfall can lead to shallow slips on slopes which are often initially in a state of partial water saturation. A multiphysics approach and advanced constitutive modeling are necessary to take into account the physical key processes in partially satur ...

ASCE2011

Quasistatic to inertial transition in granular materials and the role of fluctuations

Johan Alexandre Philippe Gaume

On the basis of discrete element numerical simulations of a Couette cell, we revisit the rheology of granular materials in the quasistatic and inertial regimes, and discuss the origin of the transition between these two regimes. We show that quasistatic zo ...

2011

THE RIGHT WAY TO CHARACTERIZE ADHESION OF POLYMERS IN PV MODULES

Valentin Chapuis, Vincent Trachsel

It is widely accepted that adherence (which reports to what is measured when performing an adhesion test) of the encapsulant to the main substrates of the module plays a key role in the long term reliability of the PV module [1,2]. Consequently, adherence ...

2011

Delamination and kink-band failure of pultruded GFRP laminates under elevated temperatures and compression

Thomas Keller, Yu Bai

Compression experiments were conducted on slender glass fiber-reinforced polymer (GFRP) laminates at different temperatures in the elevated range. Experimental buckling loads, lateral second-order deformations, and shear strength decreased with increasing ...

Elsevier2011

Investigations on water retention behaviour of deformable soils

Lyesse Laloui, Alessio Ferrari, Mathieu Nuth, Simon Salager

The trend in modern unsaturated soil mechanics is to enhance the physical understanding of the soil water retention properties. It is agreed that the retention characteristics depend on the state of compaction and are related to the deformability of the me ...

Taylor & Francis Group2010

Cyclic properties of sand

Emilie Rascol

Seismic wave propagation in granular soils can induce large strain amplitudes in case of strong earthquakes. Seismic motions are irregular in frequency content and in amplitude, and have three different components in orthogonal directions. In this context, ...

EPFL2009

Implications of thermal sensitivity of the static internal friction angle

Lyesse Laloui, Bertrand François

Thermal variability of the coefficient of the critical state, or the angle of internal friction is examined in view of experimental results obtained for clays and hard rocks. This sensitivity has several implications for the evolution of what is considered ...

INTERNATIONAL CENTRE FOR COMPUTATIONAL ENGINEERING (IC 2E)2009

Preparation and characterization of dense nanohydroxyapatite/PLLA composites

Jacques Lemaître, Sandrine Gay, Saioa Arostegui Aristimuno

Synthetic bone graft substitutes based on PLLA have been largely studied during the past decade. PLLA/hydroxyapatite composites appear as promising materials for large bone defect healing. In this study dense PLLA/nano-hydroxyapatite composites were prepar ...

2009

Near-field flow structure of a confined wall jet on flat and concave rough walls

Ulrich Lemmin, Ismail Albayrak

Experimental results are presented of the mean flow and turbulence characteristics in the near field of a plane wall jet issuing from a nozzle onto flat and concave walls consisting of fixed sand beds. This is a flow configuration of interest for sediment ...

Cambridge University Press2008

EXPERIMENTAL INVESTIGATIONS OF TEMPERATURE AND SUCTION EFFECTS ON COMPRESSIBILITY AND PRE-CONSOLIDATION PRESSURE OF A SANDY SILT

Lyesse Laloui, Bertrand François, Simon Salager

Research interest in the thermo-mechanical behaviour of unsaturated soils is growing as a result of an increasing number of geomechanical problems involving both thermal and unsaturated effects. In this framework, this paper addresses a unified thermo-mech ...

2008

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