Publications

Mechanics

Prevalent material parameters governing spalling of a slag-impregnated refractory

In steel ladle linings, bauxite refractories in contact with iron and steel slag are subjected to complex loadings. To identify the causes of degradation in different reactor linings, a coupling diagram made up of three poles is established: namely,…

Eric Blond, Nicolas Schmitt, Olivier Arnould, François Hild, Jacques Poirier, Philippe Blumenfeld

8th Exhibition and Conference of the European Ceramic Society - 2003

Mechanics

Experimental and numerical analysis of interply porosities in composites thermoforming

Effective forming of Continuous Fiber Reinforced Thermoplastic Composites requires a detailed understanding and modeling of the forming mechanisms and the development of computational techniques for process simulation. A re-compaction stage is…

Damien Soulat, Anthony Cheruet, Philippe Boisse, Serge Maison-Le Poëc, S. Guinard

Sixth International ESAFORM conference on Material Forming 2003 - 2003

Mechanics of materials

Fast estimation of localized plasticity and damage by energetic methods

Structural failure often follows the initiation of cracks occurring at corners, free edges or interfaces. Continuum damage mechanics gives quantitative information about such cracking. But when used in a fully coupled manner (with elasticity and…

Rodrigue Desmorat

International Journal of Solids and Structures - 2002

Mechanics

A new computational method for structural vibrations in the medium-frequency range

In the paper a new approach for the computation of slightly damped elastic structural vibrations over the medium frequency range is proposed. The effective quantities (deformation energy, vibrational intensity, etc ...) are evaluated after…

Pierre Ladevèze, Lionel Arnaud

Computer Assisted Methods in Engineering and Science - 2000

Mechanics of materials

Multiaxial Creep Fatigue under Anisothermal Conditions

Since creep-fatigue is mainly studied in uniaxial tension, it is shown here how to proceed to perform both experiments and calculations under multiaxialloading and when the temperature varies both in time and space. The constitutive equations used…

J. Sermage, J. Lemaitre, Rodrigue Desmorat

lUTAM Symposium on Creep in Structures - 2000

Mechanics of materials

Anisotropic damage law of evolution

Abstract – A formulation for anisotropic damage is established in the framework of the principle of strain equivalence. The damage variable is still related to the surface density of microcracks and microvoids and, as its evolution is governed by…

Jean Lemaitre, Rodrigue Desmorat, Maxime Sauzay

European Journal of Mechanics - A/Solids - 2000

Mechanics of materials

Quasi-unilateral conditions in anisotropic elasticity

A thermodynamic framework is proposed to model anisotropic elasticity different in tension and in compression. Based on Kelvin decomposition of the compliance tensor, it applies to any 3D loading. Coupling with damage is made considering fourth- and…

Rodrigue Desmorat

Comptes rendus de l’Académie des sciences. Série IIb, Mécanique - 2000

Mechanics of materials

Multiaxial creep–fatigue under anisothermal conditions

Because creep–fatigue is mainly studied in uniaxial tension, it is shown here how to proceed to perform both experiments and calculations under multiaxial loading and when the temperature varies both in time and space. The constitutive equations…

Jean-Philippe Sermage, Jean Lemaitre, Rodrigue Desmorat

Fatigue and Fracture of Engineering Materials and Structures - 2000

Mechanics of materials

Evolution law for anisotropic damage

A formulation for anisotropic damage is established in the framework of the principle of strain equivalence. The damage variable is still related to the surface density of microcracks and microvoids, and, as its evolution is governed by the plastic…

Jean Lemaitre, Rodrigue Desmorat, Maxime Sauzay

Comptes rendus de l’Académie des sciences. Série IIb, Mécanique - 1999

Mechanics of materials

A two scale damage concept applied to fatigue

The ductile type of damage is a phenomenon now well understood. Once the fully coupled set of constitutive equations is identified, Damage Mechanics is a powerful tool to predict failure. Brittle materials do not exhibit such a damageable…

J. Lemaitre, J.P. Sermage, Rodrigue Desmorat

International Journal of Fracture - 1999