title: Plastic response of a 2D Lennard-Jones amorphous solid: detailed analysis of the local rearrangements at very slow strain rate.
abstract: We analyze in detail the atomistic response of a model amorphous material submitted to plastic shear in the athermal, quasi-static limit. After a linear stress-strain behavior, the system undergoes a noisy plastic flow. We show that the plastic flow is spatially heterogeneous. Two kinds of plastic events occur in the system: quadrupolar localized rearrangements, and shear bands. The analysis of the individual motion of a particle shows also two regimes: a hyper-diffusive regime followed by a diffusive regime, even at zero temperature.
authors.affiliation: Laboratoire de Physique de la Matière Condensée et Nanostructures, Université Lyon 1, CNRS, UMR 5586 Domaine Scientifique de la Doua, F-69622, Villeurbanne cedex, France. atanguy@lpmcn.univ-lyon1.fr
authors.forename: A
authors.initials: A
authors.lastname: Tanguy
authors.forename: F
authors.initials: F
authors.lastname: Leonforte
authors.forename: J-L
authors.initials: JL
authors.lastname: Barrat