Numerical study of crystalline plasticity: measurements of the heterogeneities due to grain boundaries under small strains
Résumé
A finite element 3D polycrystalline aggregate made of 216 grains is subjected to a mean axial deformation up to 1 %. The heterogeneities inside the polycrystal are due to the crystallographic orientations of the grains-this appears at the scale of the mean responses per grain-and to the local interaction between neighbouring grains-this appears at the intragranular scale. The intragranular heterogeneity is measured as a function of the distance to the grain boundary, inside a single grain and for all the points of the microstructure.
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