Necking in single-crystal fcc copper nanobeams

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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.
Original languageEnglish
Title of host publicationProceedings to the 29th Nordic Seminar in Computational Mechanics
Number of pages4
Publication statusPublished - 2016
EventNordic Seminar in Computationa MEchanics - Chalmers Technical University, Gothenburg, Sweden
Duration: 2016 Oct 272016 Oct 28


ConferenceNordic Seminar in Computationa MEchanics
Abbreviated titleNSCM-29

Subject classification (UKÄ)

  • Mechanical Engineering

Free keywords

  • single-crystal copper
  • Necking
  • Nanobeams


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