Publication detail

Ductile fracture criteria implementation and calibration using the tension–torsion tests

ŠEBEK, F. PETRUŠKA, J. KUBÍK, P.

Czech title

Implementace a kalibrace kritérií tvárného porušování s použitím tahových–torzních testů

English title

Ductile fracture criteria implementation and calibration using the tension–torsion tests

Type

conference paper

Language

en

Original abstract

Ductile fracture calibration needs to be done on the basis of reliable experimental testing. Reliable from the proportional loading path point of view, and the knowledge of crack initiation location too. Tubular specimen was designed and biaxially tested to be used for calibration of phenomenological criterion as well as for the comparison to other tubular biaxially tested specimens from recent literature. Calibrated phenomenological criterion was implemented by developed algorithm to Abaqus using the user subroutine in order to predict the cracking onset. The proportionality of loading path was tracked together with the evolution of state variables through the wall thickness to conclude the applicability of each specimen for a specific loading.

Czech abstract

Kritérium tvárného porušování musí být provedeno na základě spolehlivého experimentálního testování. Spolehlivého z pohledu proporcionality zatěžovací cesty a také znalosti místa iniciace trhliny. Trubkový vzorek byl navržen a dvouose testován pro použití při kalibraci fenomenologického kritéria stejně jako pro porovnání s ostatním trubkovými dvouose testovanými vzorky ze současné literatury. Kalibrované fenomenologické kritérium bylo implementováno pomocí vyvinutého algoritmu do Abaqusu s použitím uživatelského podprogramu pro predikci nástupu lomu. Proporcionalita zatěžovací cesty byla sledována společně s vývojem stavových veličin skrz tloušťku stěny pro usouzení na aplikovatelnost každého vzorku pro specifické zatěžování.

English abstract

Ductile fracture calibration needs to be done on the basis of reliable experimental testing. Reliable from the proportional loading path point of view, and the knowledge of crack initiation location too. Tubular specimen was designed and biaxially tested to be used for calibration of phenomenological criterion as well as for the comparison to other tubular biaxially tested specimens from recent literature. Calibrated phenomenological criterion was implemented by developed algorithm to Abaqus using the user subroutine in order to predict the cracking onset. The proportionality of loading path was tracked together with the evolution of state variables through the wall thickness to conclude the applicability of each specimen for a specific loading.

Keywords in Czech

Indikace poškození; Trubkový vzorek; Iniciace selhání; Tvárná trhlina; Plastická deformace

Keywords in English

Damage indication; Tubular specimen; Failure initiation; Ductile crack; Plastic deformation

Released

15.05.2017

ISBN

978-80-214-5497-2

Book

Engineering Mechanics 2017

Pages from–to

854–857

Pages count

4

BIBTEX


@inproceedings{BUT135832,
  author="František {Šebek} and Jindřich {Petruška} and Petr {Kubík},
  title="Ductile fracture criteria implementation and calibration using the tension–torsion tests",
  booktitle="Engineering Mechanics 2017",
  year="2017",
  month="May",
  pages="854--857",
  isbn="978-80-214-5497-2"
}