International audienceThis paper is devoted to the description of the general relationships between micro- and macroscales in non-linear mechanics. After a thermodynamical presentation of these relations, we point out some particular cases of non-linearities, especially the case of polycrystalline aggregates in finite strain. In the case of the single crystal, the energy is well defined in the frame of the crystal lattice, the deformation of which is essentially reversible. The plastic deformation preserves the orientation and the structure of the lattice. In the case of the polycrystal, the constitutive law has the same form as the single-crystal orne, the evolution of a triad of vectors is necessary to describe the evolution of the micros...
A strain gradient-dependent crystal plasticity approach is presented to model the constitutive behav...
International audienceA long-standing problem in the modelling of polycrystal behavior from the know...
The strong heterogeneous deformation in polycrystalline and amorphous materials is investigated in t...
International audienceThis paper is devoted to the description of the general relationships between ...
Common engineering structural materials -- metallic alloys and ceramics -- are polycrystalline. They...
At the microscopic scale, deformed crystalline materials usually show heterogeneous plastic deformat...
Microstructure, texture and mechanical properties of polycrystalline materials after medium and larg...
International audienceWhen a sample is cyclically loaded under a mean stress or strain, incremental ...
Abstract This contribution aims in a geometrically linear formulation of higher gradient plasticity ...
The paper deals with some new evolution equations for gradient viscoplasticity. Geometric and kinema...
We formulate a problem of the evolution of elasto-plastic materials subjected to external loads in t...
The paper shows a new approach for formulation of temperature and rate dependent models of plastic b...
Microstructures in materials generally originate from a non-convex free energy, whereby the evolutio...
International audienceThe effect of the dislocation density tensor is introduced into the classical ...
The plasticity and viscoplasticity of polycrystalline materials are studied analytically in terms of...
A strain gradient-dependent crystal plasticity approach is presented to model the constitutive behav...
International audienceA long-standing problem in the modelling of polycrystal behavior from the know...
The strong heterogeneous deformation in polycrystalline and amorphous materials is investigated in t...
International audienceThis paper is devoted to the description of the general relationships between ...
Common engineering structural materials -- metallic alloys and ceramics -- are polycrystalline. They...
At the microscopic scale, deformed crystalline materials usually show heterogeneous plastic deformat...
Microstructure, texture and mechanical properties of polycrystalline materials after medium and larg...
International audienceWhen a sample is cyclically loaded under a mean stress or strain, incremental ...
Abstract This contribution aims in a geometrically linear formulation of higher gradient plasticity ...
The paper deals with some new evolution equations for gradient viscoplasticity. Geometric and kinema...
We formulate a problem of the evolution of elasto-plastic materials subjected to external loads in t...
The paper shows a new approach for formulation of temperature and rate dependent models of plastic b...
Microstructures in materials generally originate from a non-convex free energy, whereby the evolutio...
International audienceThe effect of the dislocation density tensor is introduced into the classical ...
The plasticity and viscoplasticity of polycrystalline materials are studied analytically in terms of...
A strain gradient-dependent crystal plasticity approach is presented to model the constitutive behav...
International audienceA long-standing problem in the modelling of polycrystal behavior from the know...
The strong heterogeneous deformation in polycrystalline and amorphous materials is investigated in t...