eprintid: 1173
rev_number: 6
eprint_status: archive
userid: 6
dir: disk0/00/00/11/73
datestamp: 2012-02-24 13:00:55
lastmod: 2013-11-20 13:17:17
status_changed: 2012-02-24 13:00:55
type: article
metadata_visibility: show
creators_name: Caldarelli, Guido
creators_name: Cafiero, Raffaele
creators_name: Gabrielli, Andrea
creators_id: guido.caldarelli@imtlucca.it
creators_id: 
creators_id: 
title: Dynamics of fractures in quenched disordered media
ispublished: pub
subjects: QC
divisions: EIC
full_text_status: none
keywords: PACS: 05.40.+j, 02.50.-r, 62.20.Mk

abstract: We introduce a model for fractures in quenched disordered media. This model has a deterministic extremal dynamics, driven by the energy function of a network of springs (Born Hamiltonian). The breakdown is the result of the cooperation between the external field and the quenched disorder. This model can be considered as describing the low-temperature limit for crack propagation in solids. To describe the memory effects in this dynamics and then to study the resistance properties of the system we realized some numerical simulations of the model. The model exhibits interesting geometric and dynamical properties, with a strong reduction of the fractal dimension of the clusters and of their backbone, with respect to the case in which thermal fluctuations dominate. This result can be explained by a recently introduced theoretical tool as a screening enhancement due to memory effects induced by the quenched disorder.
date: 1998-04
date_type: published
publication: Physical Review E
volume: 57
number: 4
publisher: American Physical Society
pagerange: 3878-3885
id_number: 10.1103/PhysRevE.57.3878
refereed: TRUE
issn: 1539-3755
official_url: http://dx.doi.org/10.1103/PhysRevE.57.3878
related_url_url: http://arxiv.org/abs/cond-mat/9801065
citation:   Caldarelli, Guido and Cafiero, Raffaele and Gabrielli, Andrea  Dynamics of fractures in quenched disordered media.  Physical Review E, 57 (4).  pp. 3878-3885.  ISSN 1539-3755      (1998)