Publication result detail

Relations between structure of material, strain rate and numerical simulations

FOREJT, M., KREJČÍ, J., JOPEK, M., BUCHAR, J.

Original Title

Relations between structure of material, strain rate and numerical simulations

English Title

Relations between structure of material, strain rate and numerical simulations

Type

Paper in proceedings (conference paper)

Original Abstract

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.

English abstract

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.

Keywords

TAT, constitutive equations, strain rate sensitivity, numerical simulations, deformation, structure

Key words in English

TAT, constitutive equations, strain rate sensitivity, numerical simulations, deformation, structure

Authors

FOREJT, M., KREJČÍ, J., JOPEK, M., BUCHAR, J.

Released

25.10.2001

Publisher

STU Bratislava

Location

Bratislava

ISBN

80-227-1591-3

Book

9th International Scientific Conference CO-MAT-TECH 2001

Pages from

64

Pages to

69

Pages count

6

URL

Knihovna FSI VUT v Brně

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",
  number="1.",
  pages="64--69",
  publisher="STU Bratislava",
  address="Bratislava",
  isbn="80-227-1591-3",
  url="Knihovna FSI VUT v Brně"
}