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Self-organization and annealed disorder in a fracturing process

Caldarelli, Guido and Di Tolla, Francesco and Petri, Alberto Self-organization and annealed disorder in a fracturing process. Physical Review Letters, 77 (12). pp. 2503-2506. ISSN 0031-9007 (1996)

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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 annealed 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.

Item Type: Article
Identification Number: 10.1103/PhysRevLett.77.2503
Additional Information: © 1996 American Physical Society
Uncontrolled Keywords: PACS: 64.60.Lx, 05.40.+j, 46.30.Nz, 62.20.Mk
Subjects: Q Science > QC Physics
Research Area: Economics and Institutional Change
Depositing User: Ms T. Iannizzi
Date Deposited: 27 Feb 2012 08:34
Last Modified: 05 Dec 2014 09:46
URI: http://eprints.imtlucca.it/id/eprint/1181

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