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Statements

Subject Item
n2:RIV%2F00216305%3A26620%2F14%3APU111847%21RIV15-MSM-26620___
rdf:type
skos:Concept n18:Vysledek
dcterms:description
The nanoindentation test of a single crystal of tungsten is simulated by a multiscale model based on 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 under a superimposed hydrostatic stress. The calculated value of the critical indentation depth is in a very good correspondence with that of the experimentally observed pop-in on the load-displacement curve. The value of the Young modulus of tungsten received from the reduced modulus of elasticity of the original Hertz model is also in an excellent agreement with experimental data. This offers us a possibility to assess the concentration of alloying and impurity elements in the surface and sub-surfa The nanoindentation test of a single crystal of tungsten is simulated by a multiscale model based on 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 under a superimposed hydrostatic stress. The calculated value of the critical indentation depth is in a very good correspondence with that of the experimentally observed pop-in on the load-displacement curve. The value of the Young modulus of tungsten received from the reduced modulus of elasticity of the original Hertz model is also in an excellent agreement with experimental data. This offers us a possibility to assess the concentration of alloying and impurity elements in the surface and sub-surfa
dcterms:title
Modeling Load-displacement Curve and Pop-in Effect in Nanoindentation Tests Modeling Load-displacement Curve and Pop-in Effect in Nanoindentation Tests
skos:prefLabel
Modeling Load-displacement Curve and Pop-in Effect in Nanoindentation Tests Modeling Load-displacement Curve and Pop-in Effect in Nanoindentation Tests
skos:notation
RIV/00216305:26620/14:PU111847!RIV15-MSM-26620___
n3:aktivita
n6:P
n3:aktivity
P(ED1.1.00/02.0068), P(GAP108/12/0144)
n3:cisloPeriodika
1
n3:dodaniDat
n4:2015
n3:domaciTvurceVysledku
n5:9413030 n5:8126887 n5:5016908 n5:8275858
n3:druhVysledku
n7:J
n3:duvernostUdaju
n10:S
n3:entitaPredkladatele
n16:predkladatel
n3:idSjednocenehoVysledku
29804
n3:idVysledku
RIV/00216305:26620/14:PU111847
n3:jazykVysledku
n17:eng
n3:klicovaSlova
Nanoindentation, Ab initio calculation, Ideal shear strength, Tungsten crystal, Finite element analysis
n3:klicoveSlovo
n13:Ab%20initio%20calculation n13:Tungsten%20crystal n13:Ideal%20shear%20strength n13:Nanoindentation n13:Finite%20element%20analysis
n3:kodStatuVydavatele
NL - Nizozemsko
n3:kontrolniKodProRIV
[3F57BEACEA99]
n3:nazevZdroje
Procedia Materials Science
n3:obor
n14:JL
n3:pocetDomacichTvurcuVysledku
4
n3:pocetTvurcuVysledku
5
n3:projekt
n12:ED1.1.00%2F02.0068 n12:GAP108%2F12%2F0144
n3:rokUplatneniVysledku
n4:2014
n3:svazekPeriodika
3
n3:tvurceVysledku
Schöberl, Thomas Šandera, Pavel Pokluda, Jaroslav Horníková, Jana Černý, Miroslav
s:issn
2211-8128
s:numberOfPages
6
n8:doi
10.1016/j.mspro.2014.06.181
n19:organizacniJednotka
26620