Density scaling and quasiuniversality of flowevent statistics for athermal plastic flows
Abstract
Athermal steadystate plastic flows were simulated for the KobAndersen binary LennardJones system and its repulsive version in which the sign of the attractive terms is changed to a plus. Properties evaluated include the distributions of energy drops, stress drops, and strain intervals between the flow events. We show that simulations at a single density in conjunction with an equilibriumliquid simulation at the same density allow one to predict the plastic flowevent statistics at other densities. This is done by applying the recently established "hidden scale invariance" of simple liquids to the glass phase. The resulting scaling of flowevent properties reveals quasiuniversality, i.e., that the probability distributions of energy drops, stress drops, and strain intervals in properly reduced units are virtually independent of the microscopic pair potentials.
 Publication:

Physical Review E
 Pub Date:
 November 2014
 DOI:
 10.1103/PhysRevE.90.052304
 arXiv:
 arXiv:1405.0156
 Bibcode:
 2014PhRvE..90e2304L
 Keywords:

 64.70.Q;
 62.20.fq;
 81.05.Bx;
 61.43.Dq;
 Theory and modeling of the glass transition;
 Plasticity and superplasticity;
 Metals semimetals and alloys;
 Amorphous semiconductors metals and alloys;
 Condensed Matter  Soft Condensed Matter;
 Condensed Matter  Disordered Systems and Neural Networks;
 Condensed Matter  Materials Science
 EPrint:
 Phys. Rev. E 90, 052304 (2014)