Abstract In this work, we advocate using Bayesian techniques for inversely identifying material parameters multiscale crystal plasticity models. Multiscale approaches modeling polycrystalline materials may significantly reduce the effort necessary characterizing such models experimentally, in particular when a large number of cycles is considered, as typical fatigue applications. Even appropria...

The mechanical response of almost pure single-crystal micro-pillars under compression exhibits a highly localized behavior that can endanger the structural stability sample. Recent experiments revealed crystal is very sensitive to both presence quenched disorder in sample, and orientation crystal. In this work, we study influence on large 2-D plane strain FCC with three active glide planes usin...

Abstract In the past couple of years, efforts have lead toward convergence two established software packages: Neper, developed primarily at CNRS and Mines Saint-Étienne, FEPX, historically Deformation Process laboratory Cornell University (since 2020) Advanced Computational Materials Engineering Laboratory Alabama. The objective was to create an extensive homogeneous ensemble for polycrystal pl...

Nanomaterials are widely used in different fields, such as microelectronics, industry, and nanocomposites, they can exhibit unstable deformation behaviour depending on the strain rates. Under rates of 10−4–10−1 s−1, nanomaterials, unlike quasi-static micromaterials, is characterized by presence rate sensitivity a possible scale phenomenon dynamic plasticity. In this paper, relaxation model plas...

A framework for investigating plasticity phenomena and their dependence on the underlying physical and size-dependent mechanisms is developed. The framework is based on crystal plasticity and three-dimensional discrete dislocation dynamics analyses. Particularly, the mesoscale model couples continuum crystal plasticity framework with a set of spatio-temporal evolution equations for dislocation ...

We consider single-crystal plasticity in the limiting case of infinite latent hardening, which signifies that the crystal must deform in single slip at all material points. This requirement introduces a nonconvex constraint, and thereby induces the formation of fine-scale structures. We restrict attention throughout to linearized kinematics and deformation theory of plasticity, which is appropr...