Publication detail

On the Proportionality of Damage Rule in Finite Element Simulations of the Ductile Failure

ŠEBEK, F. HŮLKA, J. KUBÍK, P. PETRUŠKA, J.

Original Title

On the Proportionality of Damage Rule in Finite Element Simulations of the Ductile Failure

English Title

On the Proportionality of Damage Rule in Finite Element Simulations of the Ductile Failure

Type

conference paper

Language

en

Original Abstract

Extended Mohr-Coulomb criterion which is uncoupled, therefore the plasticity is not influenced by the damage, was selected and calibrated. Experiments on the aluminum alloy 2024-T351 were carried out. Further, the impact of the damage rule proportionality was investigated. The damage exponent was sequentially held 1, 2 and 3, respectively. Therefore, the influence of the damage rate on the damage failure in finite element simulations was examined. Numerical simulations of the tensile test of smooth and notched cylindrical specimens and flat grooved specimen were performed. It is also shown that there is inability to predict slant fracture by uncoupled models for flat grooved specimen and in the final phase of tensile tests of cylindrical specimens.

English abstract

Extended Mohr-Coulomb criterion which is uncoupled, therefore the plasticity is not influenced by the damage, was selected and calibrated. Experiments on the aluminum alloy 2024-T351 were carried out. Further, the impact of the damage rule proportionality was investigated. The damage exponent was sequentially held 1, 2 and 3, respectively. Therefore, the influence of the damage rate on the damage failure in finite element simulations was examined. Numerical simulations of the tensile test of smooth and notched cylindrical specimens and flat grooved specimen were performed. It is also shown that there is inability to predict slant fracture by uncoupled models for flat grooved specimen and in the final phase of tensile tests of cylindrical specimens.

Keywords

ductile failure; damage rule; uncoupled model; explicit

RIV year

2014

Released

30.06.2014

ISBN

9783038351580

Book

Modern Technologies for Engineering, Applied Mechanics and Material Science

Pages from

189

Pages to

193

Pages count

5

BibTex


@inproceedings{BUT108064,
  author="František {Šebek} and Jiří {Hůlka} and Petr {Kubík} and Jindřich {Petruška}",
  title="On the Proportionality of Damage Rule in Finite Element Simulations of the Ductile Failure",
  annote="Extended Mohr-Coulomb criterion which is uncoupled, therefore the plasticity is not influenced by the damage, was selected and calibrated. Experiments on the aluminum alloy 2024-T351 were carried out. Further, the impact of the damage rule proportionality was investigated. The damage exponent was sequentially held 1, 2 and 3, respectively. Therefore, the influence of the damage rate on the damage failure in finite element simulations was examined. Numerical simulations of the tensile test of smooth and notched cylindrical specimens and flat grooved specimen were performed. It is also shown that there is inability to predict slant fracture by uncoupled models for flat grooved specimen and in the final phase of tensile tests of cylindrical specimens.",
  booktitle="Modern Technologies for Engineering, Applied Mechanics and Material Science",
  chapter="108064",
  howpublished="print",
  year="2014",
  month="june",
  pages="189--193",
  type="conference paper"
}