eprintid: 2307
rev_number: 6
eprint_status: archive
userid: 56
dir: disk0/00/00/23/07
datestamp: 2014-10-09 09:28:43
lastmod: 2014-10-09 09:28:43
status_changed: 2014-10-09 09:28:43
type: article
metadata_visibility: show
creators_name: Garcia, Israel
creators_name: Paggi, Marco
creators_name: Mantic, Vladislav
creators_id: 
creators_id: marco.paggi@imtlucca.it
creators_id: 
title: Fiber-size effects on the onset of fiber–matrix debonding under transverse tension: A comparison between cohesive zone and finite fracture mechanics models
ispublished: pub
subjects: TJ
divisions: CSA
full_text_status: none
abstract: The problem of fiber–matrix debonding due to transverse loading is revisited. Predictions of the critical load for the debond onset obtained by a Cohesive Zone Model combined with contact mechanics and by a Finite Fracture Mechanics model based on a coupled stress and energy criterion are compared. Both models predict a strong nonlinear dependence of the critical load on the fiber size. A good agreement between the predictions provided by these models is found for large and medium fiber radii. However, different scaling laws for small fiber radii are noticed. A discussion of the asymptotic trends for very small and very large fiber radii is presented. Limitations of both models are also discussed. For very small fibers, it is shown that matrix plasticity can prevail over fiber–matrix debonding, leading to an upper bound for the critical load. When fiber–matrix debonding prevails over plasticity for large enough fibers, the predictions provided by the two models are still in fair good agreement.
date: 2014-01
date_type: published
publication: Engineering Fracture Mechanics
volume: 115
publisher: Elsevier
pagerange: 96-110
id_number: 10.1016/j.engfracmech.2013.10.014
refereed: TRUE
issn: 0013-7944
official_url: http://dx.doi.org/10.1016/j.engfracmech.2013.10.014
citation:   Garcia, Israel and Paggi, Marco and Mantic, Vladislav  Fiber-size effects on the onset of fiber–matrix debonding under transverse tension: A comparison between cohesive zone and finite fracture mechanics models.  Engineering Fracture Mechanics, 115.  pp. 96-110.  ISSN 0013-7944      (2014)