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Indentation of thin copper film using molecular dynamics and peridynamics

Ahadi, Aylin LU ; Hansson, Per LU and Melin, Solveig LU (2016) In Procedia Structural Integrity 2. p.1343-1350
Abstract
In this study we investigate the efficiency of peridynamics to reproduce results from molecular dynamic simulations of nanoindentation of thin single-crystal fcc copper layers by calibration of material parameters in the peridynamic model. The free-ware LAMMPS supports both molecular dynamic and peridynamics approaches, and has been used as the common framework. Nanoindentation response for two different crystallographic orientations has been simulated using both numerical approaches and the force-displacement curves from the simulations have been compared between the different approaches. The conclusion is that proper chose of the peridynamic material parameters results in proper reproduction of the molecular dynamic results for the... (More)
In this study we investigate the efficiency of peridynamics to reproduce results from molecular dynamic simulations of nanoindentation of thin single-crystal fcc copper layers by calibration of material parameters in the peridynamic model. The free-ware LAMMPS supports both molecular dynamic and peridynamics approaches, and has been used as the common framework. Nanoindentation response for two different crystallographic orientations has been simulated using both numerical approaches and the force-displacement curves from the simulations have been compared between the different approaches. The conclusion is that proper chose of the peridynamic material parameters results in proper reproduction of the molecular dynamic results for the nanoindentationtest. This opens for peridynamic simulations of geometrically more complicated structures to a much lower computational cost, retaining the mechanical response from the atomic scale. (Less)
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author
; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Nano indentation, peridynamics, thin films, Molecular Dynamics
in
Procedia Structural Integrity
volume
2
pages
8 pages
publisher
Elsevier
external identifiers
  • scopus:85063028732
ISSN
2452-3216
DOI
10.1016/j.prostr.2016.06.171
project
Peridynamic modeling of materials
language
English
LU publication?
yes
id
4679169b-929d-44cf-b9d6-8a0e2ce2cb5a
date added to LUP
2019-03-29 11:21:04
date last changed
2022-04-25 22:24:44
@article{4679169b-929d-44cf-b9d6-8a0e2ce2cb5a,
  abstract     = {{In this study we investigate the efficiency of peridynamics to reproduce results from molecular dynamic simulations of nanoindentation of thin single-crystal fcc copper layers by calibration of material parameters in the peridynamic model. The free-ware LAMMPS supports both molecular dynamic and peridynamics approaches, and has been used as the common framework. Nanoindentation response for two different crystallographic orientations has been simulated using both numerical approaches and the force-displacement curves from the simulations have been compared between the different approaches. The conclusion is that proper chose of the peridynamic material parameters results in proper reproduction of the molecular dynamic results for the nanoindentationtest. This opens for peridynamic simulations of geometrically more complicated structures to a much lower computational cost, retaining the mechanical response from the atomic scale.}},
  author       = {{Ahadi, Aylin and Hansson, Per and Melin, Solveig}},
  issn         = {{2452-3216}},
  keywords     = {{Nano indentation; peridynamics; thin films; Molecular Dynamics}},
  language     = {{eng}},
  pages        = {{1343--1350}},
  publisher    = {{Elsevier}},
  series       = {{Procedia Structural Integrity}},
  title        = {{Indentation of thin copper film using molecular dynamics and peridynamics}},
  url          = {{http://dx.doi.org/10.1016/j.prostr.2016.06.171}},
  doi          = {{10.1016/j.prostr.2016.06.171}},
  volume       = {{2}},
  year         = {{2016}},
}