CE08 - Matériaux métalliques et inorganiques et procédés associés

Mesoscopic Model Informs Engineering Crystal Plasticity – MESOCRYSP

Submission summary

This project aims at developing a rigorous scaling between continuous scale crystal plasticity models and a recently proposed mesocopic scale model. This new Landau-type model, developed in 2D, allows to preserve relevant microscopic information and to reproduce key phenomena of the plastic behavior that are currently not accessible by classical continuous models: size effects, intermittent statistics of acoustic emissions. This model will first be extended to 3D and will be quantitatively calibrated with static and dynamic atomistic simulations. It will be used to improve the consideration of stochastic aspects (spatio-temporal fluctuations) in continuous models. The importance of the role of spatio-temporal fluctuations and associated localization phenomena on damage initiation has been underestimated for too long. The objective of the project is to finally bring these concepts into the numerical analysis of industrial components. This approach will allow us to extend the current approaches to plasticity to applications at the sub-micron scale. Finally, the augmented crystal plasticity model that we intend to develop in this project will also be incorporated  into  industrial scale software packages allowing one to simulate plasticity at sub-micron scale.

Project coordination

Lev Truskinovsky (Laboratoire de Physique et Mécanique des Milieux Hétérogenes)

The author of this summary is the project coordinator, who is responsible for the content of this summary. The ANR declines any responsibility as for its contents.

Partner

ARMINES CdM ASSOCIATION POUR LA RECHERCHE ET LE DEVELOPPEMENT DES METHODES ET PROCESSUS INDUSTRIELS
PMMH Laboratoire de Physique et Mécanique des Milieux Hétérogenes
LSPM Laboratoire des Sciences des Procédés et des Matériaux

Help of the ANR 449,438 euros
Beginning and duration of the scientific project: - 48 Months

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