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Papers by Jacques Desrues

Research paper thumbnail of Experimental characterization and modeling of clay rocks: multi-scale approaches - the example of the Callovo-Oxfordian argillite

HAL (Le Centre pour la Communication Scientifique Directe), Mar 26, 2015

Research paper thumbnail of Diffuse bifurcations engraving diverse shear bands in granular materials

HAL (Le Centre pour la Communication Scientifique Directe), 2018

Research paper thumbnail of A numerical homogenized law using discrete element method for continuum modelling of boundary value problems

Lecture notes in civil engineering, Oct 11, 2019

This paper presents a new way to define constitutive laws based on particles interactions within ... more This paper presents a new way to define constitutive laws based on particles interactions within the Discrete Element Method (DEM). The concept is based on Volume Element (VE) for which the constitutive law is constructed through a numerical homogenization process. The new law fully accounts for the discrete nature of granular materials. By using the response envelope diagrams proposed by Gudehus [1], a graphical representation of the constitutive law is obtained. The results suggest that the current law can fully capture the main features of granular materials such as anisotropy, path dependence and non-linearity.

Research paper thumbnail of FEM×DEM multi‐scale model for cemented granular materials: Inter‐ and intra‐granular cracking induced strain localisation

International Journal for Numerical and Analytical Methods in Geomechanics, Jan 19, 2022

In this paper, we present a multi‐scale model that combines the finite element method (FEM) and t... more In this paper, we present a multi‐scale model that combines the finite element method (FEM) and the discrete element method (DEM) to study the behaviour of cemented granular materials (CGM) at both the sample (macroscopic) and particle (microscopic) scales, taking into account inter‐ and intra‐granular cracking. At the microscopic scale, the material is made up of Volume Elements (VE) composed of particles. Their mechanical behaviour is modelled by the DEM. In the VEs, we find circular grains (single particles) and meso‐grains; the meso‐grains being made up of clusters of particles linked by strong cohesive bonds. All particles interact via normal/tangential contact and rolling resistance laws with cohesive bonds. At the macroscopic scale, the sample is modelled using the FEM. A VE is assigned to each Gauss point of the mesh; the mechanical response of the VE is used to numerically derive the constitutive response of the material to the strain increment exerted at each point. In the models reported in this paper, localised failures in shear band mode are observed at the macroscopic scale. By performing a microscopic analysis, the results show that the occurrence and development of shear bands give rise locally to a strong evolution of microscopic characteristics such as void ratio, number of contacts (total and debonding contacts), and remarkably by inter‐ and intra‐granular cracking in the case of meso‐grains. Furthermore, the stress and strain tensors non‐coaxiality is clearly demonstrated inside the shear band, but almost negligible outside.

Research paper thumbnail of Experimental characterization and modeling of clay rocks: multi-scale approaches - the example of the Callovo-Oxfordian argillite

Research paper thumbnail of Micro scale caracterisation of COX swelling and self-sealing behavior

HAL (Le Centre pour la Communication Scientifique Directe), Mar 23, 2015

International audienc

Research paper thumbnail of General Report for TC102 In-Situ Testing

Research paper thumbnail of Caractérisation des phénomènes localisés

HAL (Le Centre pour la Communication Scientifique Directe), 2011

Research paper thumbnail of Proceedings of the 18th International Conference on Soil Mechanics and Geotechnical Engineering

HAL (Le Centre pour la Communication Scientifique Directe), 2013

Research paper thumbnail of X-Ray Tomography Experiments on Sand at Different Scales

Springer eBooks, 2020

This paper presents a brief introduction to some tools used for quantitative analysis of 3D field... more This paper presents a brief introduction to some tools used for quantitative analysis of 3D fields coming from X-ray tomography with a view to elucidate micro-mechanisms of deformation in granular materials. A long-standing research objective in Laboratoire 3SR is to fully describe strain localisation in sand—results at different scales of analysis are presented and discussed alongside recent numerical advances which to our mind are the quintessential example of successful upscaling from micro to macro.

Research paper thumbnail of Multiscale FEMxDEM modelling of cohesivefrictional granular materials

Research paper thumbnail of FEM-DEM Multiscale analysis _in Geomechanics : _Strain Localisation and ₂nd Gradient Regularisation for nuclear waste underground disposal

HAL (Le Centre pour la Communication Scientifique Directe), Mar 11, 2015

International audienc

Research paper thumbnail of Localisation and bifurcation theory for soils and rocks : proceedings of the Third International Workshop on Localisation and Bifurcation Theory for Soils and Rocks, Grenoble(Aussois), France, 6-9 September 1993 = Localisation et théorie de la bifurcation dans les sols et les roches : comptes ren...

A.A. Balkema eBooks, 1994

Research paper thumbnail of nuclear science and technology Fractures and Self-healing within the Excavation Disturbed Zone in Clays (SELFRAC)

1 EIG Euridice GIE (European Underground Research Infrastructure for Disposal of Nuclear Waste in... more 1 EIG Euridice GIE (European Underground Research Infrastructure for Disposal of Nuclear Waste in Clay Environment) – BE 2 NAGRA (Nationale Genossenshaft für die Lagerung radioactiver Abfälle) – CH 3 Laboratoire 3S: Sols, Solides, Structures (INPG/UJF/CNRS) – FR 4 GIP-G.3S (Groupement d'intérêt public pour l'étude des structures souterraines de stockage) – FR 5 K. U. Leuven (Katholieke Universiteit Leuven) – BE 6 EPFL (École polytechnique fédérale de Lausanne) – CH 7 Solexperts AG – CH

Research paper thumbnail of Strain Localisation in Sand in Cycles of Triaxial Compression and Extension: Continuum and Grain-Scale Analysis

Springer Series in Geomechanics and Geoengineering, 2017

In this work we present selected results from a recent experimental programme where small sand sp... more In this work we present selected results from a recent experimental programme where small sand specimens are subjected to cycles of triaxial compression and triaxial extension: the material is “yielded” in extension, after which the loading is reversed and the material is “yielded” in compression—a number of cycles are performed. The ways in which extension and compression-like localisation patterns (i.e., dilatant shear banding, and necking respectively) appear, get activated and disactivated on reversal of loading are measured, and discussed—in terms of both (continuum) strain fields and individual grain rotations.

Research paper thumbnail of Novel bentonites for containment barrier applications

Sodium bentonite (Na-bentonite) commonly is used in geoenvironmental containment barriers to cont... more Sodium bentonite (Na-bentonite) commonly is used in geoenvironmental containment barriers to control liquid flow and contaminant migration, but is known to be thermodynamically unstable in environments where multivalent cations are present. As a result, a host of novel, chemically-modified bentonites designed for improved resilience have been developed. The objective of this paper is to illustrate selected properties of some of these bentonites being considered for containment barrier applications. The bentonites considered in this paper include Na-bentonite polymerized with acrylic acid (bentonite-polymer nanocomposite, or BPN), Na-bentonite amended with sodium carboxymethyl cellulose (HYPER clay), and a propylene carbonate modified Na-bentonite (multiswellable bentonite, or MSB). Engineering properties of the novel bentonites relevant to two specific types of barriers (i.e., cutoff walls and geosynthetic clay liners) are compared and contrasted with those of natural Na-bentonites....

Research paper thumbnail of Discrete Element Modelling of Crushable Tube-Shaped Grains

This study focuses on highly compressible granular material incorporated in novel tunnel-lining t... more This study focuses on highly compressible granular material incorporated in novel tunnel-lining technology, precisely, the prefabricated tunnel segments called voussoirs. The material composed of hollow, brittle, tube-shaped particles were designed such that the crushing of the constituent particles results in high material compressibility. This paper is essentially dedicated to discrete-element simulations that involve both the breakage of the particles at micro scale and the resulting effects on macro scale. Firstly, a 3D model was proposed in order to adequately reflect the complex geometry and the breakage manner. In applied strategy, the tube-shaped particle is modelled as a cluster of bonded, rigid, sphero-polyhedral sectors. Then, the identification of the parameters that control the mechanical response and the strength of the particles is presented using a radial compression test. This step was supported by laboratory experimental tests. Finally, six assemblies of cluster un...

Research paper thumbnail of Investigation of Uncertainty in Strength Parameter Identification

Challenges and Innovations in Geomechanics, 2021

Geotechnical parameters scatter in a wide range. On the one hand, this is due to the spatial vari... more Geotechnical parameters scatter in a wide range. On the one hand, this is due to the spatial variability of the subsoil, but also results of laboratory tests on reconstituted specimens of one sample scatter, as a completely homogeneous, reproducible specimen preparation is not feasible. For calculations according to the standards, characteristic shear parameters should be chosen as cautious estimate of the mean values. How this cautious estimate should be determined is not defined and therefore subjective. Often the results of shear tests are used as basis for the decision. In this paper, results of drained triaxial compression tests on a reconstituted, natural, widely graded soil are investigated. The specimens were prepared at same mean density but the results of the shear experiments scatter. The deviation of e.g. the peak strength is apparent. For the derivation of the Mohr-Coulomb parameter friction angle and cohesion according to the standards 3 or more stress levels have to be considered. The influence of the number of stress levels taken for the evaluation of the shear strength parameters is quantified. The evaluation of only three stress levels leads to a relatively large range of possible shear parameters. The two shear parameters friction angle and cohesion are statistically dependent-since they are two parameters of a linear regression. Therefore, they should be considered together. The scattering in the peak strength is probably caused by an inhomogeneous specimen construction. The influence of an inhomogeneous specimen preparation on the peak strength is investigated and proven in numerical simulations.

Research paper thumbnail of How does strain localise in standard triaxial tests on sand: Revisiting the mechanism 20 years on

Mechanics Research Communications, 2018

In this paper we present results from the first experiment on Hostsun HN31 sand using a newly-dev... more In this paper we present results from the first experiment on Hostsun HN31 sand using a newly-developed, standard size triaxial cell which allows x-ray tomography during loading. Results are consistent to previous work, however new measurement techniques including improved spatial resolution and Digital Image Correlation, allow incremental strain fields to be measured. Incremental strain fields after failure reveal a complex structure of localised strain, whose beginnings are found far before the stress peak. This opens some fundamental questions on how to best interpret these fundamental deformation mechanisms in sand from a modelling perspective.

Research paper thumbnail of Experimental investigation of mode I fracture energy of adhesively bonded joints under impact loading conditions

Applied Adhesion Science, 2017

Research paper thumbnail of Experimental characterization and modeling of clay rocks: multi-scale approaches - the example of the Callovo-Oxfordian argillite

HAL (Le Centre pour la Communication Scientifique Directe), Mar 26, 2015

Research paper thumbnail of Diffuse bifurcations engraving diverse shear bands in granular materials

HAL (Le Centre pour la Communication Scientifique Directe), 2018

Research paper thumbnail of A numerical homogenized law using discrete element method for continuum modelling of boundary value problems

Lecture notes in civil engineering, Oct 11, 2019

This paper presents a new way to define constitutive laws based on particles interactions within ... more This paper presents a new way to define constitutive laws based on particles interactions within the Discrete Element Method (DEM). The concept is based on Volume Element (VE) for which the constitutive law is constructed through a numerical homogenization process. The new law fully accounts for the discrete nature of granular materials. By using the response envelope diagrams proposed by Gudehus [1], a graphical representation of the constitutive law is obtained. The results suggest that the current law can fully capture the main features of granular materials such as anisotropy, path dependence and non-linearity.

Research paper thumbnail of FEM×DEM multi‐scale model for cemented granular materials: Inter‐ and intra‐granular cracking induced strain localisation

International Journal for Numerical and Analytical Methods in Geomechanics, Jan 19, 2022

In this paper, we present a multi‐scale model that combines the finite element method (FEM) and t... more In this paper, we present a multi‐scale model that combines the finite element method (FEM) and the discrete element method (DEM) to study the behaviour of cemented granular materials (CGM) at both the sample (macroscopic) and particle (microscopic) scales, taking into account inter‐ and intra‐granular cracking. At the microscopic scale, the material is made up of Volume Elements (VE) composed of particles. Their mechanical behaviour is modelled by the DEM. In the VEs, we find circular grains (single particles) and meso‐grains; the meso‐grains being made up of clusters of particles linked by strong cohesive bonds. All particles interact via normal/tangential contact and rolling resistance laws with cohesive bonds. At the macroscopic scale, the sample is modelled using the FEM. A VE is assigned to each Gauss point of the mesh; the mechanical response of the VE is used to numerically derive the constitutive response of the material to the strain increment exerted at each point. In the models reported in this paper, localised failures in shear band mode are observed at the macroscopic scale. By performing a microscopic analysis, the results show that the occurrence and development of shear bands give rise locally to a strong evolution of microscopic characteristics such as void ratio, number of contacts (total and debonding contacts), and remarkably by inter‐ and intra‐granular cracking in the case of meso‐grains. Furthermore, the stress and strain tensors non‐coaxiality is clearly demonstrated inside the shear band, but almost negligible outside.

Research paper thumbnail of Experimental characterization and modeling of clay rocks: multi-scale approaches - the example of the Callovo-Oxfordian argillite

Research paper thumbnail of Micro scale caracterisation of COX swelling and self-sealing behavior

HAL (Le Centre pour la Communication Scientifique Directe), Mar 23, 2015

International audienc

Research paper thumbnail of General Report for TC102 In-Situ Testing

Research paper thumbnail of Caractérisation des phénomènes localisés

HAL (Le Centre pour la Communication Scientifique Directe), 2011

Research paper thumbnail of Proceedings of the 18th International Conference on Soil Mechanics and Geotechnical Engineering

HAL (Le Centre pour la Communication Scientifique Directe), 2013

Research paper thumbnail of X-Ray Tomography Experiments on Sand at Different Scales

Springer eBooks, 2020

This paper presents a brief introduction to some tools used for quantitative analysis of 3D field... more This paper presents a brief introduction to some tools used for quantitative analysis of 3D fields coming from X-ray tomography with a view to elucidate micro-mechanisms of deformation in granular materials. A long-standing research objective in Laboratoire 3SR is to fully describe strain localisation in sand—results at different scales of analysis are presented and discussed alongside recent numerical advances which to our mind are the quintessential example of successful upscaling from micro to macro.

Research paper thumbnail of Multiscale FEMxDEM modelling of cohesivefrictional granular materials

Research paper thumbnail of FEM-DEM Multiscale analysis _in Geomechanics : _Strain Localisation and ₂nd Gradient Regularisation for nuclear waste underground disposal

HAL (Le Centre pour la Communication Scientifique Directe), Mar 11, 2015

International audienc

Research paper thumbnail of Localisation and bifurcation theory for soils and rocks : proceedings of the Third International Workshop on Localisation and Bifurcation Theory for Soils and Rocks, Grenoble(Aussois), France, 6-9 September 1993 = Localisation et théorie de la bifurcation dans les sols et les roches : comptes ren...

A.A. Balkema eBooks, 1994

Research paper thumbnail of nuclear science and technology Fractures and Self-healing within the Excavation Disturbed Zone in Clays (SELFRAC)

1 EIG Euridice GIE (European Underground Research Infrastructure for Disposal of Nuclear Waste in... more 1 EIG Euridice GIE (European Underground Research Infrastructure for Disposal of Nuclear Waste in Clay Environment) – BE 2 NAGRA (Nationale Genossenshaft für die Lagerung radioactiver Abfälle) – CH 3 Laboratoire 3S: Sols, Solides, Structures (INPG/UJF/CNRS) – FR 4 GIP-G.3S (Groupement d'intérêt public pour l'étude des structures souterraines de stockage) – FR 5 K. U. Leuven (Katholieke Universiteit Leuven) – BE 6 EPFL (École polytechnique fédérale de Lausanne) – CH 7 Solexperts AG – CH

Research paper thumbnail of Strain Localisation in Sand in Cycles of Triaxial Compression and Extension: Continuum and Grain-Scale Analysis

Springer Series in Geomechanics and Geoengineering, 2017

In this work we present selected results from a recent experimental programme where small sand sp... more In this work we present selected results from a recent experimental programme where small sand specimens are subjected to cycles of triaxial compression and triaxial extension: the material is “yielded” in extension, after which the loading is reversed and the material is “yielded” in compression—a number of cycles are performed. The ways in which extension and compression-like localisation patterns (i.e., dilatant shear banding, and necking respectively) appear, get activated and disactivated on reversal of loading are measured, and discussed—in terms of both (continuum) strain fields and individual grain rotations.

Research paper thumbnail of Novel bentonites for containment barrier applications

Sodium bentonite (Na-bentonite) commonly is used in geoenvironmental containment barriers to cont... more Sodium bentonite (Na-bentonite) commonly is used in geoenvironmental containment barriers to control liquid flow and contaminant migration, but is known to be thermodynamically unstable in environments where multivalent cations are present. As a result, a host of novel, chemically-modified bentonites designed for improved resilience have been developed. The objective of this paper is to illustrate selected properties of some of these bentonites being considered for containment barrier applications. The bentonites considered in this paper include Na-bentonite polymerized with acrylic acid (bentonite-polymer nanocomposite, or BPN), Na-bentonite amended with sodium carboxymethyl cellulose (HYPER clay), and a propylene carbonate modified Na-bentonite (multiswellable bentonite, or MSB). Engineering properties of the novel bentonites relevant to two specific types of barriers (i.e., cutoff walls and geosynthetic clay liners) are compared and contrasted with those of natural Na-bentonites....

Research paper thumbnail of Discrete Element Modelling of Crushable Tube-Shaped Grains

This study focuses on highly compressible granular material incorporated in novel tunnel-lining t... more This study focuses on highly compressible granular material incorporated in novel tunnel-lining technology, precisely, the prefabricated tunnel segments called voussoirs. The material composed of hollow, brittle, tube-shaped particles were designed such that the crushing of the constituent particles results in high material compressibility. This paper is essentially dedicated to discrete-element simulations that involve both the breakage of the particles at micro scale and the resulting effects on macro scale. Firstly, a 3D model was proposed in order to adequately reflect the complex geometry and the breakage manner. In applied strategy, the tube-shaped particle is modelled as a cluster of bonded, rigid, sphero-polyhedral sectors. Then, the identification of the parameters that control the mechanical response and the strength of the particles is presented using a radial compression test. This step was supported by laboratory experimental tests. Finally, six assemblies of cluster un...

Research paper thumbnail of Investigation of Uncertainty in Strength Parameter Identification

Challenges and Innovations in Geomechanics, 2021

Geotechnical parameters scatter in a wide range. On the one hand, this is due to the spatial vari... more Geotechnical parameters scatter in a wide range. On the one hand, this is due to the spatial variability of the subsoil, but also results of laboratory tests on reconstituted specimens of one sample scatter, as a completely homogeneous, reproducible specimen preparation is not feasible. For calculations according to the standards, characteristic shear parameters should be chosen as cautious estimate of the mean values. How this cautious estimate should be determined is not defined and therefore subjective. Often the results of shear tests are used as basis for the decision. In this paper, results of drained triaxial compression tests on a reconstituted, natural, widely graded soil are investigated. The specimens were prepared at same mean density but the results of the shear experiments scatter. The deviation of e.g. the peak strength is apparent. For the derivation of the Mohr-Coulomb parameter friction angle and cohesion according to the standards 3 or more stress levels have to be considered. The influence of the number of stress levels taken for the evaluation of the shear strength parameters is quantified. The evaluation of only three stress levels leads to a relatively large range of possible shear parameters. The two shear parameters friction angle and cohesion are statistically dependent-since they are two parameters of a linear regression. Therefore, they should be considered together. The scattering in the peak strength is probably caused by an inhomogeneous specimen construction. The influence of an inhomogeneous specimen preparation on the peak strength is investigated and proven in numerical simulations.

Research paper thumbnail of How does strain localise in standard triaxial tests on sand: Revisiting the mechanism 20 years on

Mechanics Research Communications, 2018

In this paper we present results from the first experiment on Hostsun HN31 sand using a newly-dev... more In this paper we present results from the first experiment on Hostsun HN31 sand using a newly-developed, standard size triaxial cell which allows x-ray tomography during loading. Results are consistent to previous work, however new measurement techniques including improved spatial resolution and Digital Image Correlation, allow incremental strain fields to be measured. Incremental strain fields after failure reveal a complex structure of localised strain, whose beginnings are found far before the stress peak. This opens some fundamental questions on how to best interpret these fundamental deformation mechanisms in sand from a modelling perspective.

Research paper thumbnail of Experimental investigation of mode I fracture energy of adhesively bonded joints under impact loading conditions

Applied Adhesion Science, 2017

Research paper thumbnail of Proceedings_18th-ICSMGE.txt

This test file provides a link to the download page of the 18th ICSMGE This page is hosted by CFM... more This test file provides a link to the download page of the 18th ICSMGE
This page is hosted by CFMS (French Soil Mechanics Committee)

Research paper thumbnail of DEM-FEM Multi-scale modelling: overcoming numerical issues

The multi-scale FEM-DEM approach is an innovative numerical method for geotechnical problems, usi... more The multi-scale FEM-DEM approach is an innovative numerical method for geotechnical problems, using at the same time the Finite Element Method (FEM) at the engineering macro-scale and the Discrete Element Method (DEM) at the scale of the microstructure of the material. The link between scales is made via computational homogenization. In this way, the continuum numerical constitutive law and the corresponding tangent matrix are obtained directly from the discrete response of the microstructure [1,2,3].