Avalanche size scaling in sheared three-dimensional amorphous solid

Nicholas Bailey, Jakob Schiøtz, A. Lemaître, Karsten Wedel Jacobsen

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Abstract

We study the statistics of plastic rearrangement events in a simulated amorphous solid at T=0. Events are characterized by the energy release and the "slip volume", the product of plastic strain and system volume. Their distributions for a given system size L appear to be exponential, but a characteristic event size cannot be inferred, because the mean values of these quantities increase as L-alpha with alpha similar to 3/2. In contrast with results obtained in 2D models, we do not see simply connected avalanches. The exponent suggests a fractal shape of the avalanches, which is also evidenced by the mean fractal dimension and participation ratio.
Original languageEnglish
JournalPhysical Review Letters
Volume98
Issue number9
Pages (from-to)095501
ISSN0031-9007
DOIs
Publication statusPublished - 2007

Bibliographical note

Copyright 2007 American Physical Society

Keywords

  • PLASTIC-DEFORMATION
  • STOCHASTIC-MODEL
  • ALLOYS
  • DYNAMICS
  • METALLIC GLASSES
  • CONTINUUM ELASTOPLASTIC BEHAVIOR

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