A micromechanics-based elastic-viscoplastic model with non local effects due to geometrically necessary dislocations

Homogenization methods based on the Eshelby inclusion problem well capture the effects of local behaviour, volume fractions and morphologies of constituents on the macroscopic behavior but still suffer from a lack of representation of internal lengths in the material associated with non-local effects or gradients. In this contribution, we propose a new micromechanical approach based on the representation of the material as a two-phase …