Dislocation-based modelling of the growth of a micro structurally short crack by single shear due to fatigue loading
(2005) In International Journal of Fatigue 27(4). p.347-356- Abstract
- The growth of a short edge crack, located within one grain in a bcc crystal and subjected to cyclic loading, is modelled using a dislocation formulation. The external boundary including the crack itself is built from dislocation dipole elements and the plasticity is represented by discrete dislocations moving along preferred slip planes. The crack propagates by single shear due to emission and annihilation of dislocations, leading to a zigzag shaped crack path. The method allows simulation of the crack growth path, crack shape and the development of the plastic zone in detail. It is shown that the grain orientation, orientation of the activated slip systems, the load and the initial crack configuration all together determines the exact... (More)
- The growth of a short edge crack, located within one grain in a bcc crystal and subjected to cyclic loading, is modelled using a dislocation formulation. The external boundary including the crack itself is built from dislocation dipole elements and the plasticity is represented by discrete dislocations moving along preferred slip planes. The crack propagates by single shear due to emission and annihilation of dislocations, leading to a zigzag shaped crack path. The method allows simulation of the crack growth path, crack shape and the development of the plastic zone in detail. It is shown that the grain orientation, orientation of the activated slip systems, the load and the initial crack configuration all together determines the exact path. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/254458
- author
- Hansson, Per LU and Melin, Solveig LU
- organization
- publishing date
- 2005
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- single shear, dislocation dipole, short crack, discrete dislocation, stage I fatigue
- in
- International Journal of Fatigue
- volume
- 27
- issue
- 4
- pages
- 347 - 356
- publisher
- Elsevier
- external identifiers
-
- wos:000226987100002
- scopus:10844230920
- ISSN
- 1879-3452
- DOI
- 10.1016/j.ijfatigue.2004.09.002
- language
- English
- LU publication?
- yes
- id
- a1b6979b-f5e0-4c12-8b85-be943a431211 (old id 254458)
- date added to LUP
- 2016-04-01 12:22:07
- date last changed
- 2022-01-27 02:48:38
@article{a1b6979b-f5e0-4c12-8b85-be943a431211,
abstract = {{The growth of a short edge crack, located within one grain in a bcc crystal and subjected to cyclic loading, is modelled using a dislocation formulation. The external boundary including the crack itself is built from dislocation dipole elements and the plasticity is represented by discrete dislocations moving along preferred slip planes. The crack propagates by single shear due to emission and annihilation of dislocations, leading to a zigzag shaped crack path. The method allows simulation of the crack growth path, crack shape and the development of the plastic zone in detail. It is shown that the grain orientation, orientation of the activated slip systems, the load and the initial crack configuration all together determines the exact path.}},
author = {{Hansson, Per and Melin, Solveig}},
issn = {{1879-3452}},
keywords = {{single shear; dislocation dipole; short crack; discrete dislocation; stage I fatigue}},
language = {{eng}},
number = {{4}},
pages = {{347--356}},
publisher = {{Elsevier}},
series = {{International Journal of Fatigue}},
title = {{Dislocation-based modelling of the growth of a micro structurally short crack by single shear due to fatigue loading}},
url = {{http://dx.doi.org/10.1016/j.ijfatigue.2004.09.002}},
doi = {{10.1016/j.ijfatigue.2004.09.002}},
volume = {{27}},
year = {{2005}},
}