TY  - JOUR
VL  - 77
SP  - 2503
PB  - American Physical Society
A1  - Caldarelli, Guido
A1  - Di Tolla, Francesco
A1  - Petri, Alberto
IS  - 12
JF  - Physical Review Letters
Y1  - 1996/09//
EP  - 2506
N1  - © 1996 American Physical Society
ID  - eprints1181
N2  - 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.
SN  - 0031-9007
UR  - http://dx.doi.org/10.1103/PhysRevLett.77.2503
KW  - PACS: 64.60.Lx
KW  -  05.40.+j
KW  -  46.30.Nz
KW  -  62.20.Mk

TI  - Self-organization and annealed disorder in a fracturing process
AV  - public
ER  -