La plasticité de la plante : d’une compréhension intégrée de sa régulation à sa formalisation dans les modèles pour les ...
The propagation of short cracks in FCC metals is strongly influenced by microstructures, in particular associated with the linear defects of the crystals, i.e. dislocations.In this work, a new coupling between two methods at the mesoscale is proposed to investigate the interaction of moving cracks with three-dimensional dislocation microstructures....
International audience
International audience
International audience
Amorphous solids under oscillatory shear, at small to moderate driving amplitudes under athermal quasi-static conditions, settle in reversible steady states such that further driving at the same amplitude leaves the system unchanged in particle positions. Beyond a critical amplitude of driving such periodic responses holding reversible plastic defo...
Full-scale structure models of high-energy situations exhibited insufficient localization when connector elements were employed to model the assemblies. An alternative approach using a super-element featuring a hole was proposed and successful in mechanical fields localization. However this approach was restrained to linear problems. An extension t...
Published in Revue Française de Géotechnique
The basic finite element formulations of upper and lower bound limit analysis are first reviewed with an emphasis on arriving at a unified formulation applicable to arbitrary yield criteria. A number of extensions are then reviewed: elastoplasticity (perfect and hardening), dynamics, and consolidation. In all cases, it is emphasized how these follo...
Tout projet concernant le massif rocheux requiert que ce massif rocheux soit reconnu et caractérisé précisément du point de vue géotechnique, ce qui est l’objet de la mécanique des roches. Un massif rocheux est un milieu discontinu composé de blocs de roche plus ou moins intacts, séparés par des discontinuités de différentes natures. Le présent art...
Les glioblastomes (GBM) sont les tumeurs les plus fréquentes et les plus agressives du système nerveux central. Depuis 2005, le protocole Stupp est suivi pour le traitement du GBM (chirurgie, radiothérapie/chimiothérapie). Malgré ce lourd traitement, les patients récidivent. L’hétérogénéité moléculaire intra- et inter-tumorale du GBM ainsi que la p...