Publication detail
Dynamic models of formed materials
FOREJT, M. KREJČÍ, J. JOPEK, M. BUCHAR, J. PERNICA, Z.
Czech title
Dynamické modely tvářených materiálů
English title
Dynamic models of formed materials
Type
journal article - other
Language
en
Original abstract
For mathematical description of flow stress dependence on true plastic strain, strain rate and temperature repeatedly verified Johnson-Cook constitutive relations for BCC materials used. these relations are based on real physical charakteristic and they are especially useful for descrption of dynamic pressure tests when inertial forces and mechanical resonance must be taken into account.
Czech abstract
K matematickému popisu závislosti deformačního odporu na efektivní plastické deformaci , rychlosti deformace a na teplotě je použit osvědčený konstitutivní vztah dle Johnson-Cooka pro BCC materiály, který zahrnuje základní fyzikální parametry. Databáze těchto materiálových modelů obsahuje verifikace simulacemi Taylorovým testem.
English abstract
For mathematical description of flow stress dependence on true plastic strain, strain rate and temperature repeatedly verified Johnson-Cook constitutive relations for BCC materials used. these relations are based on real physical charakteristic and they are especially useful for descrption of dynamic pressure tests when inertial forces and mechanical resonance must be taken into account.
Keywords in English
Constitutive equations, forming materials, true stress, strain, strain rate,
RIV year
2002
Released
01.05.2002
ISSN
1335-2393
Volume
6
Number
2
Pages from–to
21–26
Pages count
6
BIBTEX
@article{BUT40939,
author="Milan {Forejt} and Jan {Krejčí} and Miroslav {Jopek} and Jaroslav {Buchar} and Zbyněk {Pernica},
title="Dynamic models of formed materials",
year="2002",
volume="6",
number="2",
month="May",
pages="21--26",
issn="1335-2393"
}