Publication
Title
Simulation of local instabilities during crack propagation in the ductile-brittle transition region
Author
Abstract
The crack propagation for a cohesive zone model within an elastic-plastic material under small-scale yielding conditions is simulated numerically. The resulting crack growth resistance curves show local instabilities, so-called pop-ins even for homogeneous cohesive properties if the cohesive strength lies sufficiently close to the maximum stress of the corresponding blunting solution. The formation of secondary cracks and unloading zones in front of the actual crack tip is identified as the underlying mechanism. It is found that the shape of the cohesive law has a considerable influence on the crack arrest behavior. Furthermore, requirements to the mesh resolution are derived. (C) 2011 Elsevier Masson SAS. All rights reserved.
Language
English
Source (journal)
European journal of mechanics: A: solids. - Paris
Publication
Paris : 2011
ISSN
0997-7538
0750-7240
Volume/pages
30:3(2011), p. 195-203
ISI
000289605400001
Full text (Publisher's DOI)
UAntwerpen
Faculty/Department
Publication type
Subject
External links
Web of Science
Record
Identification
Creation 10.02.2015
Last edited 20.06.2017