title: Connecting Local Yield Stresses with Plastic Activity in Amorphous Solids.
abstract: In model amorphous solids produced via differing quench protocols, a strong correlation is established between local yield stress measured by direct local probing of shear stress thresholds and the plastic rearrangements observed during remote loading in shear. This purely local measure shows a higher predictive power for identifying sites of plastic activity when compared with more conventional structural properties. Most importantly, the sites of low local yield stress, thus defined, are shown to be persistent, remaining predictive of deformation events even after fifty or more such plastic rearrangements. This direct and nonperturbative approach gives access to relevant transition pathways that control the stability of amorphous solids. Our results reinforce the relevance of modeling plasticity in amorphous solids based on a gradually evolving population of discrete and local zones preexisting in the structure.
authors: Laboratoire de Physique et Mécanique des Milieux Hétèrogènes (PMMH), UMR CNRS 7636; PSL-ESPCI, 10 rue Vauquelin, 75005 Paris, France; Sorbonne Université-UPMC, Université Paris 06, France; and Sorbonne Paris Cité-UDD, Université Paris 07, France.
authors: Sylvain
authors: S
authors: Patinet
authors: Laboratoire de Physique et Mécanique des Milieux Hétèrogènes (PMMH), UMR CNRS 7636; PSL-ESPCI, 10 rue Vauquelin, 75005 Paris, France; Sorbonne Université-UPMC, Université Paris 06, France; and Sorbonne Paris Cité-UDD, Université Paris 07, France.
authors: Damien
authors: D
authors: Vandembroucq
authors: Departments of Materials Science and Engineering, Mechanical Engineering, and Physics and Astronomy, Johns Hopkins University, Baltimore, Maryland 21218, USA.
authors: Michael L
authors: ML
authors: Falk