Issue |
Europhys. Lett.
Volume 66, Number 1, April 2004
|
|
---|---|---|
Page(s) | 55 - 61 | |
Section | Electromagnetism, optics, acoustics, heat transfer, classical mechanics, and fluid dynamics | |
DOI | https://doi.org/10.1209/epl/i2003-10152-9 | |
Published online | 01 March 2004 |
Fracture precursors in disordered systems
1
Istituto Nazionale di Ottica Applicata - L.go E. Fermi 6, 50125 Firenze, Italy
2
Max Planck Institute for Physics of Complex Systems Nöthnitzer Straße 38, 01187 Dresden, Germany
3
CECM-CNRS-Vitry - 15 rue Georges Urbain, 94407 Vitry-sur-Seine, France
Received:
2
October
2003
Accepted:
2
February
2004
A two-dimensional lattice model with bond disorder is used to investigate the fracture behaviour under stress-controlled conditions. Although the cumulative energy of precursors does not diverge at the critical point, its derivative with respect to the control parameter (reduced stress) exhibits a singular behaviour. Our results are nevertheless compatible with previous experimental findings, if one restricts the comparison to the (limited) range accessible in the experiment. A power law avalanche distribution is also found with an exponent close to the experimental values.
PACS: 46.50.+a – Fracture mechanics, fatigue and cracks / 62.20.Mk – Fatigue, brittleness, fracture, and cracks / 05.70.Ln – Nonequilibrium and irreversible thermodynamics
© EDP Sciences, 2004
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