Publications

Mechanics of materials

Kelvin decomposition and multiple effective stresses concept in anisotropic materials

The effective stress concept, now classical in continuum damage mechanics, is generalized to the case of an initial anisotropy. In order to be used for both damage–elasticity and damage–(visco-)plasticity coupling, the effective stress should not…

Rodrigue Desmorat

Comptes Rendus. Mécanique - 2009

Mechanics of materials

Mécanique des matériaux solides - 3e édition

Ce cours s'adresse aux élèves-ingénieurs et aux étudiants en Masters ainsi qu'aux enseignants, aux chercheurs et aux ingénieurs. Cette nouvelle édition, entièrement revue et actualisée, s'intéresse aux phénomènes qui déterminent la résistance des…

Jean Lemaitre, Jean-Louis Chaboche, Ahmed Benallal, Rodrigue Desmorat

Economics and Finance

Analyse des marchés locaux du travail : du chômage à l'emploi

Cette étude vise à éclairer le fonctionnement des marchés locaux du travail en analysant les disparités infra-régionales de deux indicateurs de l’état du marché du travail : le taux de sortie du chômage vers l’emploi et le taux de chômage. L’analyse…

Michel Blanc, François Hild

Economie et Statistique / Economics and Statistics - 2008

Materials

Early age behaviour of concrete nuclear containments

A numerical model has been developed to predict early-age cracking for massive concrete structures. Taking into account creep at early-age is essential if one wants to predict quantitatively the induced stresses if autogenous or thermal strains are…

Farid Benboudjema, Jean-Michel Torrenti

Nuclear Engineering and Design - 2008

Mechanics of materials

Topology optimization in damage governed low cycle fatigue

Topology optimization is applied here to discuss an optimization problem of fatigue resistance. Fatigue lifetime is maximized by optimizing the shape of a structure in cyclic plasticity combined with Lemaitre damage law. The topology optimization…

Boris Desmorat, Rodrigue Desmorat

Comptes Rendus. Mécanique - 2008

Mechanics of materials

Cross-identification isotropic/anisotropic damage and application to anisothermal structural failure

Cross-identification is an easy way to build confidence in a design solution for mechanical components, as it gives dif- ferent modeling possibilities for the same case study. As an example, phenomenological Lemaitre’s damage model is cross-…

Rodrigue Desmorat, S. Otin

Engineering Fracture Mechanics - 2008

Mechanics of materials

Modèle d'endommagement avec refermeture de la porosité pour le calcul des ouvrages souterrains

A damage model is proposed to model ground loss of confinement around an underground excavation and apply it to the convergence-confinement method. The constitutive law is based, on the one hand on a continuous evolution of a damage scalar variable…

François Martin, Rodrigue Desmorat

Revue Européenne de Génie Civil - 2007

Mechanics of materials

Continuum damage mechanics for hysteresis and fatigue of quasi‐brittle materials and structures

Abstract For a material exhibiting hysteresis such as quasi‐brittle materials, it is natural to consider that hysteresis and fatigue are related to each other. One shows in the present work that damage, from the continuum damage mechanics point of…

Rodrigue Desmorat, F. Ragueneau, H. Pham

International Journal for Numerical and Analytical Methods in Geomechanics - 2007

Economics and Finance

Un nouvel indicateur synthétique prenant en compte la dynamique des réponses individuelles à l'enquête Industrie

L'interprétation des enquêtes de conjoncture est très souvent fondée sur l'évolution de soldes d'opinion, qui constituent le résumé le plus largement utilisé de l'information recueillie auprès des entreprises. Cet article suggère la construction d…

François Hild

Economie et Statistique / Economics and Statistics - 2006

Mechanics of materials

Courbe de convergence d’un tunnel pour un modèle phénoménologique d’endommagement

A closed-form solution of the ground reaction curve is presented. Non-linearities of rock materials are modelled by using the isotropic phenomenological damage formalism. À validation of the solution by the transfer matrix method is proposed. The «…

F. Martin, Rodrigue Desmorat, A. Saitta

Revue française de Géotechnique - 2006