Plastic response of a 2D Lennard-Jones amorphous solid: Detailed analysis of the local rearrangements at very slow strain rate |
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Authors: | A Tanguy F Leonforte J -L Barrat |
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Institution: | (1) 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 |
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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. |
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Keywords: | 61 43 Er Other amorphous solids 62 20 -x Mechanical properties of solids 62 20 Fe Deformation and plasticity (including yield ductility and superplasticity) |
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