DEVELOPMENT OF NUMERICAL TOOLS FOR THE MULTISCALE MODELLING OF RECRYSTALLISATION IN METALS, BASED ON A DIGITAL MATERIAL FRAMEWORK

This work is currently under development within the framework of an American-European project (Digimat Project). The paper details the development of some numerical tools dedicated to the digital representation of metallic materials structures, to the generation of associated anisotropic meshes and to the finite element modelling of the polycrystalline microstructure deformation under large strains. The level set method used for the description of the microstructure interfaces is shown to represent a common base to all these developments. Key words: digital microstructure, polycrystal, anisotropic meshing and remeshing, finite element simulation, level set metho