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The influence of biaxial loading on branching of a dissolution driven stress corrosion crack

Bjerkén, Christina LU (2010) 3rd International Conference on Crack Paths, 2009 In Engineering Fracture Mechanics 77(11). p.1989-1997
Abstract
Stress corrosion cracking occurs due to the synergistic interaction between mechanical load and corrosion reactions. In this study, branching during anodic dissolution driven crack growth is studied using an adaptive FE procedure. The crack has an inherent blunt tip due to the dissolution, and the growth is treated as a moving boundary problem with a strain-assisted evolution law. Simulations are performed with different degrees of load biaxiality. It is found that increasing biaxiality promotes branching. No conditions for when branching takes place are found. Crack growth rates for branches are investigated, and it is found that, after an initial acceleration, constant growth rates can be reached, as well as decreasing speed and eventual... (More)
Stress corrosion cracking occurs due to the synergistic interaction between mechanical load and corrosion reactions. In this study, branching during anodic dissolution driven crack growth is studied using an adaptive FE procedure. The crack has an inherent blunt tip due to the dissolution, and the growth is treated as a moving boundary problem with a strain-assisted evolution law. Simulations are performed with different degrees of load biaxiality. It is found that increasing biaxiality promotes branching. No conditions for when branching takes place are found. Crack growth rates for branches are investigated, and it is found that, after an initial acceleration, constant growth rates can be reached, as well as decreasing speed and eventual arrest. The influence of T-stresses and perturbations sensitivity are discussed. (c) 2010 Elsevier Ltd. All rights reserved. (Less)
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author
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
keywords
Biaxial loading, Stress corrosion cracking, Branching, Finite element method, Crack growth
in
Engineering Fracture Mechanics
volume
77
issue
11
pages
1989 - 1997
publisher
Elsevier
conference name
3rd International Conference on Crack Paths, 2009
external identifiers
  • wos:000280285800032
  • scopus:77954027418
ISSN
0013-7944
DOI
10.1016/j.engfracmech.2010.03.026
language
English
LU publication?
yes
id
d1c6747a-b722-436c-823c-67e6f14d467b (old id 1656047)
date added to LUP
2010-08-25 15:50:52
date last changed
2018-05-29 09:30:13
@inproceedings{d1c6747a-b722-436c-823c-67e6f14d467b,
  abstract     = {Stress corrosion cracking occurs due to the synergistic interaction between mechanical load and corrosion reactions. In this study, branching during anodic dissolution driven crack growth is studied using an adaptive FE procedure. The crack has an inherent blunt tip due to the dissolution, and the growth is treated as a moving boundary problem with a strain-assisted evolution law. Simulations are performed with different degrees of load biaxiality. It is found that increasing biaxiality promotes branching. No conditions for when branching takes place are found. Crack growth rates for branches are investigated, and it is found that, after an initial acceleration, constant growth rates can be reached, as well as decreasing speed and eventual arrest. The influence of T-stresses and perturbations sensitivity are discussed. (c) 2010 Elsevier Ltd. All rights reserved.},
  author       = {Bjerkén, Christina},
  booktitle    = {Engineering Fracture Mechanics},
  issn         = {0013-7944},
  keyword      = {Biaxial loading,Stress corrosion cracking,Branching,Finite element method,Crack growth},
  language     = {eng},
  number       = {11},
  pages        = {1989--1997},
  publisher    = {Elsevier},
  title        = {The influence of biaxial loading on branching of a dissolution driven stress corrosion crack},
  url          = {http://dx.doi.org/10.1016/j.engfracmech.2010.03.026},
  volume       = {77},
  year         = {2010},
}