4 papers · 1 filter
Self-induced marginality in plastically deformed crystals
Oguz Umut Salman, Aylin Ahadi, Lev Truskinovsky
Quasi-brittle plastic yielding is a salient feature of well-annealed glassy materials. Here we show that the same behavior is characteristic of perfect crystals after they experien…
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…
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…