Detail publikace
Vztah mezi strukturou materiálu, rychlosti deformace a numerickou simulací
FOREJT, M. KREJČÍ, J. JOPEK, M. BUCHAR, J.
Český název
Vztah mezi strukturou materiálu, rychlosti deformace a numerickou simulací
Anglický název
Relations between structure of material, strain rate and numerical simulations
Typ
článek ve sborníku ve WoS nebo Scopus
Jazyk
en
Originální abstrakt
The paper presents some problems posed by material models of high strain rate deformation in the form of constitutive equations. Parameters of constitutive equations are identified with sufficient accuracy by the TAT (Taylor anvil test) methods. These test performed on miscellaneous materials show one common anomaly. The numerical simulations of resulting speciment shape by the LS DYNA 3D, using Johnson-Cook equation (or other, e.g., Zerilli Armstrong) do not agree with experiment along the entire speciment length. The amount of disagreement depends on impact velocity.
Český abstrakt
Příspěvek ukazuje na některé problémy s určením parametrů konstitutivní rovnice Johnson-Cooka ověřované kompresním testem dle Taylora. Pro modelování chování materiálů při vysokých rychlostech deformace je používána řada konstitutivních vztahů, z nichž nejpoužívanější jsou definované Johnson-Cookem a Zerilli -Armstrongem.
Anglický abstrakt
The paper presents some problems posed by material models of high strain rate deformation in the form of constitutive equations. Parameters of constitutive equations are identified with sufficient accuracy by the TAT (Taylor anvil test) methods. These test performed on miscellaneous materials show one common anomaly. The numerical simulations of resulting speciment shape by the LS DYNA 3D, using Johnson-Cook equation (or other, e.g., Zerilli Armstrong) do not agree with experiment along the entire speciment length. The amount of disagreement depends on impact velocity.
Klíčová slova anglicky
TAT, constitutive equations, strain rate sensitivity, numerical simulations, deformation, structure
Rok RIV
2001
Vydáno
25.10.2001
Nakladatel
STU Bratislava
Místo
Bratislava
ISBN
80-227-1591-3
Kniha
9th International Scientific Conference CO-MAT-TECH 2001
Číslo edice
1.
Strany od–do
64–69
Počet stran
6
BIBTEX
@inproceedings{BUT3223,
author="Milan {Forejt} and Jan {Krejčí} and Miroslav {Jopek} and Jaroslav {Buchar},
title="Relations between structure of material, strain rate and numerical simulations",
booktitle="9th International Scientific Conference CO-MAT-TECH 2001",
year="2001",
month="October",
pages="64--69",
publisher="STU Bratislava",
address="Bratislava",
isbn="80-227-1591-3"
}