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Bertrand François

Cette personne a quitté l’EPFL

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Publications associées (35)

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ACMEG-TS: A constitutive model for unsaturated soils under non-isothermal conditions

Lyesse Laloui, Bertrand François

This paper introduces an unconventional constitutive model for soils which deals with a unified thermo-mechanical modelling for unsaturated soils. The relevant temperature and suction effects are studied in light of elasto-plasticity. A generalized effecti ...

2008

Finite element modelling of thermo-elasto-plastic water saturated porous materials

Lyesse Laloui, Bertrand François

The purpose of this paper is to present a new finite element formulation for the hydro-thermo-mechanical analysis of elasto-plastic multiphase materials based on Porous Media Mechanics. To this end, the ACMEG-T thermo-plastic constitutive model for saturat ...

2008

Compression Tests on a Sandy Silt at Different Suction and Temperature Levels

Lyesse Laloui, Bertrand François, Simon Salager

This paper presents a unified thermo-mechanical experimental study on a remoulded unsaturated sandy silt and brings a contribution to the understanding of the fundamental mechanics of unsaturated soils in non- isothermal conditions. The experimental progra ...

2007

Measurement of the inclusive and differential t(t)over-bar gamma cross sections in the dilepton channel and effective field theory interpretation in proton-proton collisions at root s=13 TeV

Olivier Martin, Ian Smith, Matthias Finger, Richard Pitts, Miguel Fernández Ruiz, Sun Hee Kim, Jean-François Carlin, Jian Zhao, Arvind Shah, Chao Wang, Melody Swartz, Yi Zhang, Dalziel Joseph Wilson, Hoài-Minh Nguyên, Pedro Camilo de Oliveira e Silva, Alberto Hernando de Castro, João Miguel das Neves Duarte, Rakesh Chawla, Myun Sik Kim, Tian Cheng, Thomas Mountford, Yixing Chen, Ananda Sankar Roy, Varun Sharma, Bertrand François, Josef Andreas Schuler, Aravind Kumar Chandiran, Yogesh Singh Chauhan, Jae-Woo Choi, Jin Won Seo, Joo Yeon Kim, Wei Sun, Xiaoqiang Wang, Kyumin Lee, Muhammad Aiman Bin Rahmanudin Hamdan, Chia-Chun Chen, Randoald Müller, Alexis Kalogeropoulos, Jung Eung Park, Ana Margarida Da Costa Ricardo, Sebastian James Davis, Melissa Catherine Olson, Christoph Ernst René Schäfer, Adam Wade Marcus, Johannes Steen, Adrien Alexis Paul Chauvet, Hoang-Trang Lam, Maria Isabel Cordero Campana, Carlos Andres Peña Reyes, Justin Terence Notz Pekkanen, Cristopher Ariel Zeballos Avila

The production cross section of a top quark pair in association with a photon is measured in proton-proton collisions in the decay channel with two oppositely charged leptons (e(+/-)mu(-/+), e(+)e(-), or mu(+)mu(-)). The measurement is performed using 138 ...

Springer Nature2022

ACMEG-T: Soil Thermo-Plasticity Model

Lyesse Laloui, Bertrand François

This paper addresses an advanced and unified thermo-mechanical constitutive model for cohesive soils. Based on experimental evidence showing the non-linear and irreversible thermo-mechanical responses of saturated soils, the constitutive equations of the d ...

2009

Behaviour of an engineered clay barrier for a nuclear waste isolation system

Lyesse Laloui, Bertrand François

In a few years, safe and definitive solutions should be ready to manage large quantities of high-level radioactive waste. Deep geological repository involving a multibarrier system constitutes one of the most promising options to isolate such waste from th ...

INTERNATIONAL CENTRE FOR COMPUTATIONAL ENGINEERING (IC 2E)2009

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

Un modèle de comportement thermo-plastique pour les sols-non-saturés: Application aux stockages de déchets nucléaires

Bertrand François

Un modèle constitutif thermo-hydro-mécanique dédié aux sols fins a été développé afin de prédire le comportement des géomatériaux intervenant dans la problématique du confinement des déchets nucléaires en couche géologique profonde. Ce modèle considère l’a ...

2008

Unsaturated soils under non-isothermal conditions: Framework of a new constitutive model

Lyesse Laloui, Bertrand François

This paper addresses a new, unified thermo-mechanical constitutive model for unsaturated soils through a coupled study. In the context of elasto-plasticity and the critical state theory, the model uses the concepts of multi-mechanism and bounding surface t ...

2008

Modelling the thermo-plasticity of unsaturated soils

Lyesse Laloui, Bertrand François

Springer2012

Thermo-plasticity in unsaturated soils, a constitutive approach

Lyesse Laloui, Bertrand François

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. A new constitutive model dealing with partially saturated soi ...

2008

Thermo-hydro-mechanical simulation of ATLAS in-situ large scale test in Boom Clay

Lyesse Laloui, Bertrand François

Following the need for understanding and quantifying the effect of temperature on the response of a candidate host formation for radioactive waste disposal, finite element modelling of an in-situ thermal experiment has been carried out. Based on a thermo-h ...

2009

Bertrand François

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ACMEG-TS: A constitutive model for unsaturated soils under non-isothermal conditions

Finite element modelling of thermo-elasto-plastic water saturated porous materials

Compression Tests on a Sandy Silt at Different Suction and Temperature Levels

Measurement of the inclusive and differential t(t)over-bar gamma cross sections in the dilepton channel and effective field theory interpretation in proton-proton collisions at root s=13 TeV

ACMEG-T: Soil Thermo-Plasticity Model

Behaviour of an engineered clay barrier for a nuclear waste isolation system

Implications of thermal sensitivity of the static internal friction angle

Un modèle de comportement thermo-plastique pour les sols-non-saturés: Application aux stockages de déchets nucléaires

Unsaturated soils under non-isothermal conditions: Framework of a new constitutive model

Modelling the thermo-plasticity of unsaturated soils

Thermo-plasticity in unsaturated soils, a constitutive approach

Thermo-hydro-mechanical simulation of ATLAS in-situ large scale test in Boom Clay

Geomechanical Aspects of a Large Landslide by Means of a Finite-element Method : A Case Study

Numerical Simulation of an In-Situ underground Experiment for Nuclear Waste Storage

Mechanical constitutive framework for thermal effects on unsaturated soils