Thumbnail
Access Restriction
Open

Author Caldarelli, G. ♦ Di Tolla, F. D. ♦ Petri, A.
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword PHYSICS ♦ FRACTURE MECHANICS ♦ COMPUTERIZED SIMULATION ♦ ANNEALING ♦ ELASTICITY ♦ STRESSES ♦ CRACK PROPAGATION ♦ POTENTIAL ENERGY ♦ ALGORITHMS ♦ RANDOMNESS
Abstract We show that a vectorial model for inhomogeneous elastic media self-organizes under external stress. An onset of crack avalanches of every duration and length scale compatible with the lattice size is observed. The behavior is driven by the introduction of {ital annealed} {ital disorder}, i.e., by lowering the breaking threshold in the neighborhood of a bond broken by the stress, with a process similar to self-organized criticality. A further comparison with experimental results of acoustic emission (AE), shows that the stability of the elastic potential energy of the system in the AE regime is a sufficient condition for reproducing the algebraic distribution of the energy released during cracks formation. {copyright} {ital 1996 The American Physical Society.}
ISSN 00319007
Educational Use Research
Learning Resource Type Article
Publisher Date 1996-09-01
Publisher Place United States
Journal Physical Review Letters
Volume Number 77
Issue Number 12


Open content in new tab

   Open content in new tab