Necking in single-crystal fcc copper nanobeams

Aylin Ahadi; Solveig Melin

Necking in single-crystal fcc copper nanobeams

Research output: Chapter in Book/Report/Conference proceeding › Paper in conference proceeding › peer-review

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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.

Original language	English
Title of host publication	Proceedings to the 29th Nordic Seminar in Computational Mechanics
Number of pages	4
Publication status	Published - 2016
Event	Nordic Seminar in Computationa MEchanics - Chalmers Technical University, Gothenburg, Sweden Duration: 2016 Oct 27 → 2016 Oct 28

Conference

Conference	Nordic Seminar in Computationa MEchanics
Abbreviated title	NSCM-29
Country/Territory	Sweden
City	Gothenburg
Period	2016/10/27 → 2016/10/28

Subject classification (UKÄ)

Mechanical Engineering

Free keywords

single-crystal copper
Necking
Nanobeams

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Modelling mechanical properties at nanoscale by molecular dynamics
Ahadi, A. (Researcher), Melin, S. (Researcher) & Hansson, P. (Researcher)
2017/02/01 → …
Project: Research

Cite this

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title = "Necking in single-crystal fcc copper nanobeams",

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.",

keywords = "single-crystal copper, Necking, Nanobeams",

author = "Aylin Ahadi and Solveig Melin",

year = "2016",

language = "English",

booktitle = "Proceedings to the 29th Nordic Seminar in Computational Mechanics",

note = "Nordic Seminar in Computationa MEchanics ; Conference date: 27-10-2016 Through 28-10-2016",

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TY - GEN

T1 - Necking in single-crystal fcc copper nanobeams

AU - Ahadi, Aylin

AU - Melin, Solveig

PY - 2016

Y1 - 2016

N2 - 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.

AB - 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.

KW - single-crystal copper

KW - Necking

KW - Nanobeams

M3 - Paper in conference proceeding

BT - Proceedings to the 29th Nordic Seminar in Computational Mechanics

T2 - Nordic Seminar in Computationa MEchanics

Y2 - 27 October 2016 through 28 October 2016

ER -

Necking in single-crystal fcc copper nanobeams

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Conference

Subject classification (UKÄ)

Free keywords

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Projects

Modelling mechanical properties at nanoscale by molecular dynamics

Cite this