Publication
Title
Consistent simulation of ductile crack propagation with discrete 3D voids
Author
Abstract
In the present study ductile crack propagation in metals is simulated numerically under small-scale yielding conditions. For this purpose discrete spherical voids are modeled in the process zone around the crack tip. In contrast to many studies of this type, voids are incorporated in the whole domain. In a consistent way the voids are resolved discretely where necessary and are taken into account in a homogenized way by means of the GTN-model where possible. A shielding effect is observed caused by the void growth around the process zone. Several regular void arrangements are investigated. A parameter study with respect to the elastic-plastic parameters of the matrix material is performed indicating a strong influence of these properties. The results are compared with experimental data from literature showing that the model allows quantitative predictions of the crack growth resistance. (C) 2013 Elsevier B. V. All rights reserved.
Language
English
Source (journal)
Computational materials science
Publication
2013
ISSN
0927-0256
Volume/pages
80(2013), p. 61-70
ISI
000324996800008
Full text (Publisher's DOI)
UAntwerpen
Faculty/Department
Publication type
Subject
External links
Web of Science
Record
Identification
Creation 10.02.2015
Last edited 12.07.2017