Search Results - "Combe, Gaël"

Sample preparation of dense granular materials Influence of void ratio e and coordination number Z on the mechanical behaviour at failure by Nawaz, Shah, Combe, Gaël

“…This paper presents a Discrete Element Method (DEM) study of assemblies of 5041 frictional discs, with periodic boundary conditions and confined by an external…”
Get full text

Grain-scale DEM study of open-ended pipe pile penetration in granular soils by Komodromos, Michail, Combe, Gaël, Viggiani, Gioacchino

“…Open-Ended Pipe Piles (OEPP) are particularly popular in offshore engineering. An important feature of the installation of these piles is the rate with which…”
Get full text

High compressibility caused by particle breakage: a DEM investigation by Stasiak, Marta, Richefeu, Vincent, Combe, Gaël, Zghondi, Jad, Armand, Gilles

“…This paper summarises the numerical and experimental studies of brittle, hollow, cylindrical particles, called shells . It addresses the influence of shell…”
Get full text

Experimental Validation of a Nonextensive Scaling Law in Confined Granular Media by Combe, Gaël, Richefeu, Vincent, Stasiak, Marta, Atman, Allbens P F

“…In this Letter, we address the relationship between the statistical fluctuations of grain displacements for a full quasistatic plane shear experiment, and the…”
Get full text

Stochastic model for the micromechanics of jammed granular materials: experimental studies and numerical simulations by Tolomeo, Mathias, Saitoh, Kuniyasu, Gaël, Combe, Luding, Stefan, Magnanimo, Vanessa, Richefeu, Vincent, Viggiani, Gioacchino

“…To describe statistical properties of complicated restructuring of the force network under isotropic compression, we measure the conditional probability…”
Get full text

Assessing contact forces in granular materials from experimental measurements of kinematics by Tolomeo, Mathias, Richefeu, Vincent, Combe, Gaël, Roux, Jean-Noël, Viggiani, Gioacchino

“…We propose a new approach to assess interparticle forces in granular materials, based on the combination of experimental measurements and numerical techniques…”
Get full text

FEM × DEM: a new efficient multi-scale approach for geotechnical problems with strain localization by Nguyen, Trung Kien, Claramunt, Albert Argilaga, Caillerie, Denis, Combe, Gaël, Dal Pont, Stefano, Desrues, Jacques, Richefeu, Vincent

“…The paper presents a multi-scale modeling of Boundary Value Problem (BVP) approach involving cohesive-frictional granular materials in the FEM × DEM…”
Get full text

Experimental investigation of mode I fracture for brittle tube-shaped particles by Stasiak, Marta, Combe, Gaël, Desrues, Jacques, Richefeu, Vincent, Villard, Pascal, Armand, Gilles, Zghondi, Jad

“…We focus herein on the mechanical behavior of highly crushable grains. The object of our interest, named shell, is a hollow cylinder grain with ring…”
Get full text

Strain versus stress in a model granular material: A Devil's staircase by Combe, G, Roux, JN

“…The series of equilibrium states reached by disordered packings of rigid, frictionless disks in two dimensions, under gradually varying stress, are studied by…”
Get full text

Wear of sharp aggregates in a rotating drum by Deiros Quintanilla, Ivan, Combe, Gaël, Emeriault, Fabrice, Toni, Jean-Benoît, Voivret, Charles, Ferellec, Jean François

“…Aggregates constituting ballast layer wear due to the continuous passage of trains and during the necessary maintenance operations of the track. In order to…”
Get full text

Effects of a large number of cycles on pile shaft resistance analyzed at the grain scale using x-ray tomography by Doreau–Malioche, Jeanne, Combe, Gaël, Toni, Jean-Benoît, Viggiani, Gioacchino

“…This study presents the results of laboratory-scale cyclic loading tests performed on an instrumented pile in sand using x-ray micro tomography and…”
Get full text

The particle image tracking technique: An accurate optical method for measuring individual kinematics of rigid particles by Richefeu, Vincent, Combe, Gaël

“…We present a new approach to assess the two‐dimensional motion of rigid bodies in granular materials. Although it was adapted from digital image correlation…”
Get full text

Jamming transition in a two-dimensional open granular pile with rolling resistance by Magalhães, Caio F. M., Atman, Allbens P.F., Combe, Gaël, Moreira, José G.

“…We present a molecular dynamics study of the jamming/unjamming transition in two-dimensional granular piles with open boundaries. The grains are modeled by…”
Get full text

From discrete to continuum modelling of boundary value problems in geomechanics: An integrated FEM‐DEM approach by Desrues, Jacques, Argilaga, Albert, Caillerie, Denis, Combe, Gaël, Nguyen, Trung Kiên, Richefeu, Vincent, Dal Pont, Stefano

“…Summary Double‐scale numerical methods constitute an effective tool for simultaneously representing the complex nature of geomaterials and treating real‐scale…”
Get full text

Macro-micro analysis of ground response to circular tunnel excavation in granular media by Nguyen, Trung-Kien, Desrues, Jacques, Vo, Thanh-Trung, Combe, Gaël

“…Ground reaction in terms of stress and displacement analysis is one of the major challenges in tunnel design and is helpful for understanding the stability…”
Get full text

Two-scale modeling of granular materials: a DEM-FEM approach by Nitka, Michał, Combe, Gaël, Dascalu, Cristian, Desrues, Jacques

“…The presented study considers a two-scale numerical scheme for the description of the behavior of granular materials. At the small-scale level, the granular…”
Get full text

X-ray CT analysis of the evolution of ballast grain morphology along a Micro-Deval test: key role of the asperity scale by Deiros Quintanilla, Ivan, Combe, Gaël, Emeriault, Fabrice, Voivret, Charles, Ferellec, Jean-François

“…Ballast grains in railway tracks progressively wear due to the efforts exerted by the continuous passage of trains and the periodic maintenance operations. The…”
Get full text

Emergence of Shear Bands in Confined Granular Systems: Singularity of the q-Statistics by Viallon-Galiner, Léo, Combe, Gaël, Richefeu, Vincent, Picardi Faria-Atman, Allbens

“…The statistics of grain displacements probability distribution function (pdf) during the shear of a granular medium displays an unusual dependence with the…”
Get full text

A study of the influence of REV variability in double-scale FEM ×DEM analysis by Shahin, Ghassan, Desrues, Jacques, Pont, Stefano Dal, Combe, Gaël, Argilaga, Albert

“…Summary In this work, the consequences of using several different discrete element granular assemblies for the representation of the microscale structure, in…”
Get full text

Experimental and discrete element modeling studies of the trapdoor problem: influence of the macro-mechanical frictional parameters by Chevalier, B., Combe, G., Villard, P.

“…Granular soils have the inherent ability to develop load transfers in their mass. Mechanisms of load transfers are used as a basic principle of many civil and…”
Get full text