Publication detail

Multiaxial ductile fracture criteria coupled with non-quadratic non-prismatic yield surface in the predictions for a naturally aged aluminium alloy

ŠEBEK, F. KUBÍK, P. PETRUŠKA, J. NÁVRAT, T. ZAPLETAL, J.

Czech title

Víceosá kritéria tvárného porušování svázaná s nekvadratickou neprizmatickou plochou plasticity při predikcích pro slitinu hliníku po přirozeném stárnutí

English title

Multiaxial ductile fracture criteria coupled with non-quadratic non-prismatic yield surface in the predictions for a naturally aged aluminium alloy

Type

journal article in Web of Science

Language

en

Original abstract

The ductile fracture has been one of the most important topics in various branches, such as the automotive, maritime or energy industry. Many approaches have been developed under certain assumptions. The present work focuses on bringing together the microstructural- and phenomenological-based ductile fracture modelling under large plastic deformations, room temperature and quasi-static monotonic loading. The complex yield criterion dependent on three stress invariants with a deviatoric associated flow rule was coupled with several advanced multiaxial ductile fracture criteria. The models were calibrated for the 2024-T351 aluminium alloy and implemented within the commercial explicit finite element code of Abaqus. Two additional tests, which were not covered within the calibration procedure, were simulated to demonstrate good predictability of the onset of cracking and its propagation, modelled by the element deletion technique. It was a small punch test and a three-point bending test of a randomly notched bar.

Czech abstract

Tvárné porušování je jedním z nejdůležitějších témat v různých odvětvích, jako je automobilní, námořní či energetický průmysl. Mnoho přístupu bylo vyvinuto za jistých předpokladů. Současná práce se zaměřuje na sloučení mikrostrukturně a fenomenologicky založeného modelování tvárného porušování při velkých plastických deformacích, pokojové teplotě a kvazistatickém monotónním zatěžování. Komplexní podmínka plasticity závislá na třech invariantech napětí s deviátorově sdruženým zákonem tečení byla svázána s několika pokročilými víceosými kritérii tvárného porušování. Modely byly kalibrovány pro slitinu hliníku 2024-T351 a implementovány v rámci komerčního explicitního konečnoprvkového kódu Abaqus. Dva další testy, které nebyly zahrnuty do kalibrační procedury, byly simulovány pro demonstraci dobré predikce nástupu lomu a jeho šíření, modelovaném pomocí techniky mazání prvků. Těmito byly miniaturní penetrační test a test tříbodovým ohybem náhodně vrubované tyče.

English abstract

The ductile fracture has been one of the most important topics in various branches, such as the automotive, maritime or energy industry. Many approaches have been developed under certain assumptions. The present work focuses on bringing together the microstructural- and phenomenological-based ductile fracture modelling under large plastic deformations, room temperature and quasi-static monotonic loading. The complex yield criterion dependent on three stress invariants with a deviatoric associated flow rule was coupled with several advanced multiaxial ductile fracture criteria. The models were calibrated for the 2024-T351 aluminium alloy and implemented within the commercial explicit finite element code of Abaqus. Two additional tests, which were not covered within the calibration procedure, were simulated to demonstrate good predictability of the onset of cracking and its propagation, modelled by the element deletion technique. It was a small punch test and a three-point bending test of a randomly notched bar.

Keywords in Czech

Iniciace trhliny; dynamika; poškození; selhání; změkčení materiálu; šikmý lom

Keywords in English

Crack initiation; Dynamics; Damage; Failure; Material softening; Slant fracture

Released

01.01.2023

ISSN

0376-9429

Volume

239

Number

1

Pages from–to

41–67

Pages count

27

BIBTEX


@article{BUT180455,
  author="František {Šebek} and Petr {Kubík} and Jindřich {Petruška} and Tomáš {Návrat} and Josef {Zapletal},
  title="Multiaxial ductile fracture criteria coupled with non-quadratic non-prismatic yield surface in the predictions for a naturally aged aluminium alloy",
  year="2023",
  volume="239",
  number="1",
  month="January",
  pages="41--67",
  issn="0376-9429"
}