Skip to main content

Lund University Publications

LUND UNIVERSITY LIBRARIES

Shielding effects and dislocation repositioning at cleavage crack growth

Andersson, P. and Ståhle, Per LU (1996) 11th Biennial European Conference on Fracture - ECF 11 p.419-424
Abstract
The motion of pre-existing edge dislocations in an infinite linear elastic body is studied. Motion is due to a quasi-statically steady-state growing crack. In the model, the dislocations glide if the force on the dislocation exceeds a critical value. Obtained results are changes in dislocation density, the shielding effect on the crack tip and residual stresses. The model is applied to an isotropic material. The residual stress far behind the crack tip is tensile near the crack, decreasing to zero at a certain distance above the crack plane. The indication is that the shielding effect may be considerable.
Please use this url to cite or link to this publication:
author
and
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
host publication
Mechanisms and mechanics of damage and failure : proceedings of the 11th Biennial European conference on fracture -ECF 11- held in Poitiersa-Futuroscope, France, 3-6 September 1996 ... - proceedings of the 11th Biennial European conference on fracture -ECF 11- held in Poitiersa-Futuroscope, France, 3-6 September 1996 ...
editor
Petit, J. ; deFouquet, J. ; Henaff, G. ; Villechaise, P. and Dragon, A.
pages
419 - 424
conference name
11th Biennial European Conference on Fracture - ECF 11
conference location
Poitiers, France
conference dates
1996-09-03 - 1996-09-06
ISBN
0947817905
language
English
LU publication?
no
id
cbce3d36-1703-48c7-ba42-37e312868ea5 (old id 1445036)
date added to LUP
2016-04-04 14:01:08
date last changed
2020-03-25 14:51:31
@inproceedings{cbce3d36-1703-48c7-ba42-37e312868ea5,
  abstract     = {{The motion of pre-existing edge dislocations in an infinite linear elastic body is studied. Motion is due to a quasi-statically steady-state growing crack. In the model, the dislocations glide if the force on the dislocation exceeds a critical value. Obtained results are changes in dislocation density, the shielding effect on the crack tip and residual stresses. The model is applied to an isotropic material. The residual stress far behind the crack tip is tensile near the crack, decreasing to zero at a certain distance above the crack plane. The indication is that the shielding effect may be considerable.}},
  author       = {{Andersson, P. and Ståhle, Per}},
  booktitle    = {{Mechanisms and mechanics of damage and failure : proceedings of the 11th Biennial European conference on fracture -ECF 11- held in Poitiersa-Futuroscope, France, 3-6 September 1996 ...}},
  editor       = {{Petit, J. and deFouquet, J. and Henaff, G. and Villechaise, P. and Dragon, A.}},
  isbn         = {{0947817905}},
  language     = {{eng}},
  pages        = {{419--424}},
  title        = {{Shielding effects and dislocation repositioning at cleavage crack growth}},
  url          = {{https://lup.lub.lu.se/search/files/6260875/4246509.pdf}},
  year         = {{1996}},
}