Publications

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

Positivity of intrinsic dissipation of a class of nonstandard anisotropic damage models

A nonstandard thermodynamics framework ensures the positivity of the dissipation due to degradation mechanisms for damage states represented by a symmetric second order tensor. The proof of the positivity of the intrinsic dissipation is given. An…

Rodrigue Desmorat

Comptes Rendus. Mécanique - 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

Mechanics of materials

Fatigue limit evaluations of a complex structure by using temperature measurements

The study deals with the long-term reliability of a high precision pressure sensor using bellows mainly made of electroplated Ni. The bellows are expected to stay in service for many decades. Their high cycle fatigue behavior has to be known to…

Olivier Arnould, Pierre Brémond, François Hild

Applied Mechanics and Materials - 2005

Mechanics of materials

Engineering Damage Mechanics : Ductile, Creep, Fatigue and Brittle Failures

Engineering Damage Mechanics is deliberately oriented toward applications of Continuum Damage Mechanics to failures of mechanical and civil engineering components in ductile, creep, fatigue and brittle conditions depending upon the thermomechanical…

Jean Lemaitre, Rodrigue Desmorat

Structural mechanics

Accounting for nonlinear aspects in multiphysics problems: Application to poroelasticity

Multiphysics phenomena lead to computationally intensive structural analyses. Recently, a new strategy derived from the LATIN method was described and successfully applied to the consolidation of saturated porous soils. One of the main achievements…

David Néron, Pierre Ladevèze, David Dureisseix, Bernard A. Schrefler

Lecture Notes in Computer Science - 2004

Mechanics of materials

Thermodynamics modelling of internal friction and hysteresis of elastomers

The study of the physical structure of filled elastomers makes us able to identify the state variables needed to model the behavior of elastomeric materials. We build a thermodynamics potential (written for finite strains and in 3D) which accounts…

Sabine Cantournet, Rodrigue Desmorat

Comptes Rendus. Mécanique - 2003