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

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

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Publication Article, peer reviewed scientific
Title The influence of biaxial loading on branching of a dissolution driven stress corrosion crack
Author(s) Bjerkén, Christina
Date 2010
English 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.
DOI http://dx.doi.org/10.1016/j.engfracmech.2010.03.026 (link to publisher's fulltext)
Publisher Elsevier
Host/Issue Engineering Fracture Mechanics;11
Volume 77
ISSN 0013-7944
Pages 1989-1997
Language eng (iso)
Subject(s) dissolution driven
branching
crack
biaxial loading
simulation
FEM
Humanities/Social Sciences
Research Subject Categories::TECHNOLOGY::Engineering mechanics
Research Subject Categories::TECHNOLOGY::Materials science
Handle http://hdl.handle.net/2043/10375 (link to this page)

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