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"
}