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Necking in single-crystal fcc copper nanobeams

Ahadi, Aylin LU and Melin, Solveig LU (2016) Nordic Seminar in Computationa MEchanics In Proceedings to the 29th Nordic Seminar in Computational Mechanics
Abstract (Swedish)
Molecular dynamic simulation of nanosized single-crystal copper beams loaded in tension at different strain rates until necking has been performed for two different crystallographic orientations, the [100]- and the [110]-orientations. The molecular dynamics freeware code LAMMPS was employed for the simulations. It was found that, at low enough strain rates, single necking was obtained for both crystallographic orientations and at high enough strain rates both orientations showed necking at both ends. However, the behavior differed between the orientations at intermediate strain rates. For the [100]- orientation multiple necking zones developed which not occurred for the [110]-orientation. This followed from the different developments of... (More)
Molecular dynamic simulation of nanosized single-crystal copper beams loaded in tension at different strain rates until necking has been performed for two different crystallographic orientations, the [100]- and the [110]-orientations. The molecular dynamics freeware code LAMMPS was employed for the simulations. It was found that, at low enough strain rates, single necking was obtained for both crystallographic orientations and at high enough strain rates both orientations showed necking at both ends. However, the behavior differed between the orientations at intermediate strain rates. For the [100]- orientation multiple necking zones developed which not occurred for the [110]-orientation. This followed from the different developments of the plasticity in the beams between the orientations. (Less)
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Chapter in Book/Report/Conference proceeding
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in press
subject
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Proceedings to the 29th Nordic Seminar in Computational Mechanics
pages
4 pages
conference name
Nordic Seminar in Computationa MEchanics
language
English
LU publication?
yes
id
6976a312-7b12-4b13-852a-f3a4bb1ceb50
date added to LUP
2016-09-27 13:22:54
date last changed
2016-11-04 10:59:04
@inproceedings{6976a312-7b12-4b13-852a-f3a4bb1ceb50,
  abstract     = {Molecular dynamic simulation of nanosized single-crystal copper beams loaded in tension at different strain rates until necking has been performed for two different crystallographic orientations, the [100]- and the [110]-orientations. The molecular dynamics freeware code LAMMPS was employed for the simulations. It was found that, at low enough strain rates, single necking was obtained for both crystallographic orientations and at high enough strain rates both orientations showed necking at both ends. However, the behavior differed between the orientations at intermediate strain rates.  For the [100]- orientation multiple necking zones developed which not occurred for the [110]-orientation. This followed from the different developments of the plasticity in the beams between the orientations.},
  author       = {Ahadi, Aylin and Melin, Solveig},
  booktitle    = {Proceedings to the 29th Nordic Seminar in Computational Mechanics},
  language     = {eng},
  pages        = {4},
  title        = {Necking in single-crystal fcc copper nanobeams},
  year         = {2016},
}