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Stress and displacement configurations in the vicinity of a void in a nanometer copper strip

Johansson, Dan LU ; Hansson, Per LU and Melin, Solveig LU (2016) In Engineering Fracture Mechanics 152. p.139-146
Abstract

Molecular dynamics is used to simulate nanometer-sized copper strips. The strips are highly constrained and chosen to mimic thin films between two stiff layers. Further, the strips hold centrally placed straight through crack shaped voids, and are subjected to tensile displacement controlled mode I loading. The tensile stresses and displacements are studied. It is found that if a copper strip is 2.16906. nm in a direction orthogonal to the loading direction, the strip does not experience plane strain conditions. However, if this dimension is ≥3.6151. nm, the strip shows states of both plane stress and plane strain.

Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Fracture mechanics, Molecular dynamics, Plane strain, Plane stress, Size dependence nano-sized strip
in
Engineering Fracture Mechanics
volume
152
pages
8 pages
publisher
Elsevier
external identifiers
  • Scopus:84955666631
  • WOS:000369607300010
ISSN
0013-7944
DOI
10.1016/j.engfracmech.2015.07.033
language
English
LU publication?
yes
id
6647489b-7ce8-44c4-86ae-0ef71232bc4d
date added to LUP
2016-06-23 07:52:03
date last changed
2017-01-01 08:28:49
@article{6647489b-7ce8-44c4-86ae-0ef71232bc4d,
  abstract     = {<p>Molecular dynamics is used to simulate nanometer-sized copper strips. The strips are highly constrained and chosen to mimic thin films between two stiff layers. Further, the strips hold centrally placed straight through crack shaped voids, and are subjected to tensile displacement controlled mode I loading. The tensile stresses and displacements are studied. It is found that if a copper strip is 2.16906. nm in a direction orthogonal to the loading direction, the strip does not experience plane strain conditions. However, if this dimension is ≥3.6151. nm, the strip shows states of both plane stress and plane strain.</p>},
  author       = {Johansson, Dan and Hansson, Per and Melin, Solveig},
  issn         = {0013-7944},
  keyword      = {Fracture mechanics,Molecular dynamics,Plane strain,Plane stress,Size dependence nano-sized strip},
  language     = {eng},
  month        = {02},
  pages        = {139--146},
  publisher    = {Elsevier},
  series       = {Engineering Fracture Mechanics},
  title        = {Stress and displacement configurations in the vicinity of a void in a nanometer copper strip},
  url          = {http://dx.doi.org/10.1016/j.engfracmech.2015.07.033},
  volume       = {152},
  year         = {2016},
}