Computationally efficient modelling of short fatigue crack growth using dislocation formulations
(2008) In Engineering Fracture Mechanics 75(10). p.3189-3205- Abstract
- Abstract in Undetermined
In an attempt to develop it computationally efficient model for simulation of fatigue crack growth of microstructurally short cracks two dislocation based models have been compared. In both models, the geometry of the boundary and the crack is described using dislocation dipole elements, whereas the plasticity is described either by discrete dislocations or by distributed dipole elements. The two models were found to agree qualitatively its well as quantitatively. It was concluded that modelling the plasticity by dipole elements becomes comparatively increasingly more time efficient with increasing grain size plastic zone size. However, plasticity modelling by dipole elements showed to provide somewhat higher... (More) - Abstract in Undetermined
In an attempt to develop it computationally efficient model for simulation of fatigue crack growth of microstructurally short cracks two dislocation based models have been compared. In both models, the geometry of the boundary and the crack is described using dislocation dipole elements, whereas the plasticity is described either by discrete dislocations or by distributed dipole elements. The two models were found to agree qualitatively its well as quantitatively. It was concluded that modelling the plasticity by dipole elements becomes comparatively increasingly more time efficient with increasing grain size plastic zone size. However, plasticity modelling by dipole elements showed to provide somewhat higher crack growth rates. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/777201
- author
- Hansson, Per LU ; Melin, Solveig LU and Persson, Christer LU
- organization
- publishing date
- 2008
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- short crack, discrete dislocation, distributed dislocations, single shear, fatigue
- in
- Engineering Fracture Mechanics
- volume
- 75
- issue
- 10
- pages
- 3189 - 3205
- publisher
- Elsevier
- external identifiers
-
- wos:000256014600023
- scopus:40849111444
- ISSN
- 1873-7315
- DOI
- 10.1016/j.engfracmech.2007.12.002
- language
- English
- LU publication?
- yes
- id
- fba7f458-002e-41a9-99ef-c86dbe29b742 (old id 777201)
- date added to LUP
- 2016-04-01 14:26:21
- date last changed
- 2022-01-28 00:40:47
@article{fba7f458-002e-41a9-99ef-c86dbe29b742,
abstract = {{Abstract in Undetermined<br/>In an attempt to develop it computationally efficient model for simulation of fatigue crack growth of microstructurally short cracks two dislocation based models have been compared. In both models, the geometry of the boundary and the crack is described using dislocation dipole elements, whereas the plasticity is described either by discrete dislocations or by distributed dipole elements. The two models were found to agree qualitatively its well as quantitatively. It was concluded that modelling the plasticity by dipole elements becomes comparatively increasingly more time efficient with increasing grain size plastic zone size. However, plasticity modelling by dipole elements showed to provide somewhat higher crack growth rates.}},
author = {{Hansson, Per and Melin, Solveig and Persson, Christer}},
issn = {{1873-7315}},
keywords = {{short crack; discrete dislocation; distributed dislocations; single shear; fatigue}},
language = {{eng}},
number = {{10}},
pages = {{3189--3205}},
publisher = {{Elsevier}},
series = {{Engineering Fracture Mechanics}},
title = {{Computationally efficient modelling of short fatigue crack growth using dislocation formulations}},
url = {{http://dx.doi.org/10.1016/j.engfracmech.2007.12.002}},
doi = {{10.1016/j.engfracmech.2007.12.002}},
volume = {{75}},
year = {{2008}},
}