Detail publikace

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

Originální název

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

Anglický název

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

Jazyk

en

Originální abstrakt

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.

Anglický abstrakt

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.

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",
  annote="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.",
  address="Institute of Thermomechanics AS CR, v. v. i.",
  chapter="101089",
  institution="Institute of Thermomechanics AS CR, v. v. i.",
  number="2",
  volume="2013 (58)",
  year="2013",
  month="august",
  pages="141--155",
  publisher="Institute of Thermomechanics AS CR, v. v. i.",
  type="journal article - other"
}