Internal length scales are key quantities in strain gradient-gradient plasticity models by governing the predicted mechanical behavior. However, the physical origin of such lengths is still unclear. In his 2nd manuscript, Houssam Kharouji, doctoral researcher in our group at the LEM3, shade some lights on such origin in the case of grain boundary structures and energies. The manuscript is available : Kharouji et al., On the atomistic origin of internal length scale in strain-gradient plasticity models: The case of grain boundary structures and energies, Acta Materialia 285 (2024) 120555 [open access].
