Detail publikace
3D atomové simulace únavových vlastností tvárné trhliny v železe BCC zatíženém v módu II
UHNÁKOVÁ, A. POKLUDA, J. MACHOVÁ, A. HORA, P.
Český název
3D atomové simulace únavových vlastností tvárné trhliny v železe BCC zatíženém v módu II
Anglický název
3D Atomistic Simulation of Fatigue Behavior of a Ductile Crack in BCC Iron loaded in mode II
Typ
článek v časopise ve Web of Science, Jimp
Jazyk
en
Originální abstrakt
We present new results of 3D molecular dynamic (MD) simulations of a mechanical response of an edge crack [110] (crack plane/crack front) in a single crystal of bcc iron cyclically loaded in mode II at room temperature and 0 K under different boundary conditions. Our previous 3D molecular dynamic simulations showed that this crack under monotonic uniaxial tension loading in mode I emitted blunting dislocations in the inclined slip systems and it was stable up to very high loads, in qualitative agreement with experiments and continuum predictions. Our question is how the cyclic loading in mode II changes the crack behaviour and its stability. The paper also brings information on comparison with fatigue behaviour of the crack loaded in mode I and in mode III.
Český abstrakt
We present new results of 3D molecular dynamic (MD) simulations of a mechanical response of an edge crack [110] (crack plane/crack front) in a single crystal of bcc iron cyclically loaded in mode II at room temperature and 0 K under different boundary conditions. Our previous 3D molecular dynamic simulations showed that this crack under monotonic uniaxial tension loading in mode I emitted blunting dislocations in the inclined slip systems and it was stable up to very high loads, in qualitative agreement with experiments and continuum predictions. Our question is how the cyclic loading in mode II changes the crack behaviour and its stability. The paper also brings information on comparison with fatigue behaviour of the crack loaded in mode I and in mode III.
Anglický abstrakt
We present new results of 3D molecular dynamic (MD) simulations of a mechanical response of an edge crack [110] (crack plane/crack front) in a single crystal of bcc iron cyclically loaded in mode II at room temperature and 0 K under different boundary conditions. Our previous 3D molecular dynamic simulations showed that this crack under monotonic uniaxial tension loading in mode I emitted blunting dislocations in the inclined slip systems and it was stable up to very high loads, in qualitative agreement with experiments and continuum predictions. Our question is how the cyclic loading in mode II changes the crack behaviour and its stability. The paper also brings information on comparison with fatigue behaviour of the crack loaded in mode I and in mode III.
Klíčová slova anglicky
atomistic simulation; fatigue behavior; ductile crack; BCC iron
Rok RIV
2012
Vydáno
23.03.2012
ISSN
0927-0256
Ročník
61
Číslo
1
Strany od–do
12–19
Počet stran
8
BIBTEX
@article{BUT89318,
author="Alena {Uhnáková} and Jaroslav {Pokluda} and Anna {Machová} and Petr {Hora},
title="3D Atomistic Simulation of Fatigue Behavior of a Ductile Crack in BCC Iron loaded in mode II",
year="2012",
volume="61",
number="1",
month="March",
pages="12--19",
issn="0927-0256"
}