Publication result detail

Multiscale modelling of nanoindentation test in Cu crystal

HORNÍKOVÁ, J.; ŠANDERA, P.; ČERNÝ, M.; POKLUDA, J.

Original Title

Multiscale modelling of nanoindentation test in Cu crystal

English Title

Multiscale modelling of nanoindentation test in Cu crystal

Type

Peer-reviewed article not indexed in WoS or Scopus

Original Abstract

The nanoindentation test in the dislocation free crystal of copper is simulated by a nonlinear elastic finite element analysis coupled with both ab initio calculations of the ideal shear strength and crystallographic considerations. The onset of microplasticity, associated with the pop-in effect identified in experimental nanoindentation tests (creation of first dislocations), is assumed to be related to the moment of achieving the value of the ideal shear strength for the copper crystal. Calculated values of the critical indentation depth lie within the range of experimentally observed pop-ins in the copper crystal. The related indentation load is somewhat lower than that observed in the experiment.

English abstract

The nanoindentation test in the dislocation free crystal of copper is simulated by a nonlinear elastic finite element analysis coupled with both ab initio calculations of the ideal shear strength and crystallographic considerations. The onset of microplasticity, associated with the pop-in effect identified in experimental nanoindentation tests (creation of first dislocations), is assumed to be related to the moment of achieving the value of the ideal shear strength for the copper crystal. Calculated values of the critical indentation depth lie within the range of experimentally observed pop-ins in the copper crystal. The related indentation load is somewhat lower than that observed in the experiment.

Keywords

Nanoindentation; Ab initio calculation; Ideal shear strength; Copper crystal; Finite element analysis

Key words in English

Nanoindentation; Ab initio calculation; Ideal shear strength; Copper crystal; Finite element analysis

Authors

HORNÍKOVÁ, J.; ŠANDERA, P.; ČERNÝ, M.; POKLUDA, J.

Released

07.12.2007

ISBN

0013-7944

Periodical

ENGINEERING FRACTURE MECHANICS

Volume

76

Number

1

State

United Kingdom of Great Britain and Northern Ireland

Pages count

8

BibTex

@article{BUT44759,
  author="Jana {Horníková} and Pavel {Šandera} and Miroslav {Černý} and Jaroslav {Pokluda}",
  title="Multiscale modelling of nanoindentation test in Cu crystal",
  journal="ENGINEERING FRACTURE MECHANICS",
  year="2007",
  volume="76",
  number="1",
  pages="8",
  issn="0013-7944"
}