Detail publikace
Multiscale Modelling of Nanoindentation Test in Copper Crystal
HORNÍKOVÁ, J. ŠANDERA, P. ČERNÝ, M. POKLUDA, J.
Český název
Multiscale Modelling of Nanoindentation Test in Copper Crystal
Anglický název
Multiscale Modelling of Nanoindentation Test in Copper Crystal
Typ
abstrakt
Jazyk
en
Originální abstrakt
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.
Český abstrakt
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.
Anglický abstrakt
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.
Klíčová slova česky
Nanoindentation; Ab initio calculation; Ideal shear strength; Copper crystal; Finite element analysis
Klíčová slova anglicky
Nanoindentation; Ab initio calculation; Ideal shear strength; Copper crystal; Finite element analysis
Vydáno
29.06.2007
Nakladatel
Vutium
Místo
Brno
Strany od–do
45–45
Počet stran
1