Publication result detail

Identification and application of Gurson–Tvergaard–Needleman model for sub-sized three-point-bend geometry

STRATIL, L.; HADRABA, H.; KOZÁK, V.; DLOUHÝ, I.

Original Title

Identification and application of Gurson–Tvergaard–Needleman model for sub-sized three-point-bend geometry

English Title

Identification and application of Gurson–Tvergaard–Needleman model for sub-sized three-point-bend geometry

Type

Peer-reviewed article not indexed in WoS or Scopus

Original Abstract

The process identification and determination of micro-mechanical parameters of Gurson–Tvergaard–Needleman (GTN) model for Eurofer97 steel in ductile regime was carried out. The possibility to derive the GTN model parameters from smooth tensile specimens was verified. The process identification of the model parameters was done by combination of fractography and metallography examination of the broken tensile specimens and finite element analysis using Abaqus code. Crack resistance curve of the material was determined on sub-sized pre-cracked bend bars. The agreement between experimentally determine and simulated crack resistance curves was not satisfactory. The possible reasons for different behaviour of the GTN model are discussed.

English abstract

The process identification and determination of micro-mechanical parameters of Gurson–Tvergaard–Needleman (GTN) model for Eurofer97 steel in ductile regime was carried out. The possibility to derive the GTN model parameters from smooth tensile specimens was verified. The process identification of the model parameters was done by combination of fractography and metallography examination of the broken tensile specimens and finite element analysis using Abaqus code. Crack resistance curve of the material was determined on sub-sized pre-cracked bend bars. The agreement between experimentally determine and simulated crack resistance curves was not satisfactory. The possible reasons for different behaviour of the GTN model are discussed.

Keywords

GTN model, Eurofer97, smooth tensile test, J–R curve, KLST specimen

Key words in English

GTN model, Eurofer97, smooth tensile test, J–R curve, KLST specimen

Authors

STRATIL, L.; HADRABA, H.; KOZÁK, V.; DLOUHÝ, I.

RIV year

2014

Released

08.08.2013

Publisher

Institute of Thermomechanics AS CR, v. v. i.

Location

Praha

ISBN

0001-7043

Periodical

Acta Technica ČSAV

Volume

2013 (58)

Number

2

State

Czech Republic

Pages from

141

Pages to

155

Pages count

15

BibTex

@article{BUT101089,
  author="Luděk {Stratil} and Hynek {Hadraba} and Vladislav {Kozák} and Ivo {Dlouhý}",
  title="Identification and application of Gurson–Tvergaard–Needleman model for sub-sized three-point-bend geometry",
  journal="Acta Technica ČSAV",
  year="2013",
  volume="2013 (58)",
  number="2",
  pages="141--155",
  issn="0001-7043"
}