4 papers
Discontinuous yielding of pristine micro-crystals
O. U. Salman, R. Baggio, B. Bacroix +3
We study the mechanical response of a dislocation-free 2D crystal under homogenous shear using a new mesoscopic approach to crystal plasticity, a Landau-type theory, accounting for…
De-localizing brittle fracture
O. U. Salman, L. Truskinovsky
Extreme localization of damage in conventional brittle materials is the source of a host of undesirable effects. We show how artificially engineered metamaterials with all brittle…
Variety of scaling behaviors in nanocrystalline plasticity
P. Zhang, O. U. Salman, J. Weiss +1
We address the question of why larger, high symmetry crystals are mostly weak, ductile and statistically sub-critical, while smaller crystals with the same symmetry are strong, bri…
Landau theory of crystal plasticity
R. Baggio, E. Arbib, P. Biscari +4
We show that nonlinear continuum elasticity can be effective in modeling plastic flows in crystals if it is viewed as Landau theory with an infinite number of equivalent energy wel…