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Název:
The Gurson-Tvergaard-Needleman model calibration from sub-size test specimens by size corresponding to the half of Charpy specimen
Autoři: Stratil, Luděk ; Šiška, Filip ; Hadraba, Hynek ; Dlouhý, Ivo
Typ dokumentu: Příspěvky z konference
Konference/Akce: SSTT 2014 - International Conference Determination of Mechanical Properties of Materials by Small Punch and Other Miniature Testing Techniques /3./, Seggau (AT), 2014-09-23 / 2014-09-25
Rok: 2014
Jazyk: eng
Abstrakt: The paper deals with a utilization of miniaturized tensile specimens for purposes of local approach application from limited amount of test material. The motivation for application of those miniaturized specimens is the utilization of volume of test material corresponding to the half of Charpy specimen. The tensile testing of miniaturized specimens was conducted at room temperature in ductile regime of the Eurofer97 steel followed by detailed fractography and quantitative analysis of micromechanism of damage. The parameters of Gurson-Tvergaard-Needleman micromechanical model of ductile fracture were calibrated. Except for the slight differences in strength and deformation characteristics no other differences between two sizes of tensile specimens were found. The calibrated sets of parameters of GTN model using the same element size were very similar. The application of different calibrated sets of GTN model parameters for simulation of damage in cracked specimen (R-curve) is sensitive to the element size and needs its calibration.
Klíčová slova: ductile damage; fractography analysis; GTN model; miniaturized specimens
Číslo projektu: ED1.1.00/02.0068, EE2.3.20.0197
Poskytovatel projektu: GA MŠk, GA MŠk
Zdrojový dokument: Determination of mechanical properties of materials by small punch and other miniature testing techniques, ISBN 978-80-260-6722-1
Instituce: Ústav fyziky materiálů AV ČR (web)
Informace o dostupnosti dokumentu: Dokument je dostupný v příslušném ústavu Akademie věd ČR.
Původní záznam: http://hdl.handle.net/11104/0239397
Trvalý odkaz NUŠL: http://www.nusl.cz/ntk/nusl-177656
Záznam je zařazen do těchto sbírek:
Věda a výzkum > AV ČR > Ústav fyziky materiálů
Konferenční materiály > Příspěvky z konference
Autoři: Stratil, Luděk ; Šiška, Filip ; Hadraba, Hynek ; Dlouhý, Ivo
Typ dokumentu: Příspěvky z konference
Konference/Akce: SSTT 2014 - International Conference Determination of Mechanical Properties of Materials by Small Punch and Other Miniature Testing Techniques /3./, Seggau (AT), 2014-09-23 / 2014-09-25
Rok: 2014
Jazyk: eng
Abstrakt: The paper deals with a utilization of miniaturized tensile specimens for purposes of local approach application from limited amount of test material. The motivation for application of those miniaturized specimens is the utilization of volume of test material corresponding to the half of Charpy specimen. The tensile testing of miniaturized specimens was conducted at room temperature in ductile regime of the Eurofer97 steel followed by detailed fractography and quantitative analysis of micromechanism of damage. The parameters of Gurson-Tvergaard-Needleman micromechanical model of ductile fracture were calibrated. Except for the slight differences in strength and deformation characteristics no other differences between two sizes of tensile specimens were found. The calibrated sets of parameters of GTN model using the same element size were very similar. The application of different calibrated sets of GTN model parameters for simulation of damage in cracked specimen (R-curve) is sensitive to the element size and needs its calibration.
Klíčová slova: ductile damage; fractography analysis; GTN model; miniaturized specimens
Číslo projektu: ED1.1.00/02.0068, EE2.3.20.0197
Poskytovatel projektu: GA MŠk, GA MŠk
Zdrojový dokument: Determination of mechanical properties of materials by small punch and other miniature testing techniques, ISBN 978-80-260-6722-1
Instituce: Ústav fyziky materiálů AV ČR (web)
Informace o dostupnosti dokumentu: Dokument je dostupný v příslušném ústavu Akademie věd ČR.
Původní záznam: http://hdl.handle.net/11104/0239397
Trvalý odkaz NUŠL: http://www.nusl.cz/ntk/nusl-177656
Záznam je zařazen do těchto sbírek:
Věda a výzkum > AV ČR > Ústav fyziky materiálů
Konferenční materiály > Příspěvky z konference
Záznam vytvořen dne 2014-11-27, naposledy upraven 2021-11-24.