Residual stress distributions in athermally deformed amorphous solids from atomistic simulations
arXiv:1908.01081
Abstract
The distribution of local residual stresses (threshold to instability) that controls the statistical properties of plastic flow in athermal amorphous solids is examined with an atomistic simulation technique. For quiescent configurations, the distribution has a pseudogap (power-law) form with an exponent that agrees well with global yielding statistics. As soon as deformation sets in, the pseudogap region gives way to a system size dependent plateau at small residual stresses that can be understood from the statistics of local residual stress {\em differences} between plastic events. Results further suggest that the local yield stress in amorphous solids changes even if the given region does not participate in plastic activity.
References in corpus (19)
- Dynamics of Viscoplastic Deformation in Amorphous Solids
- The role of local structure in dynamical arrest
- Vibrational modes identify soft spots in a sheared disordered packing
- Local elasticity map and plasticity in a model Lennard-Jones glass
- Scaling description of the yielding transition in soft amorphous solids at zero temperature
- A random critical point separates brittle and ductile yielding transitions in amorphous materials
- Statistical Physics of the Yielding Transition in Amorphous Solids
- Driving rate dependence of avalanche statistics and shapes at the yielding transition
- Measuring Spatial Distribution of Local Elastic Modulus in Glasses
- On the density of shear transformation zones in amorphous solids
- The effect of inertia on sheared disordered solids: Critical scaling of avalanches in two and three dimensions
- Locality and Non-locality in Elasto-plastic Responses of Amorphous Solids
- Rejuvenation and Shear-Banding in model amorphous solids
- Soft modes and non-affine rearrangements in the inherent structures of supercooled liquids
- Probing relevant ingredients in mean-field approaches for the athermal rheology of yield stress materials
- Stochastic Approach to Plasticity and Yield in Amorphous Solids
- Deformation and flow of amorphous solids: An updated review of mesoscale elastoplastic models
- On the critical exponents of the yielding transition of amorphous solids
- Avalanches, thresholds, and diffusion in meso-scale amorphous plasticity