Publication detail

Ductile fracture predictions in small punch testing of cold-rolled aluminium alloy

ŠEBEK, F. PARK, N. KUBÍK, P. PETRUŠKA, J. ZAPLETAL, J.

Original Title

Ductile fracture predictions in small punch testing of cold-rolled aluminium alloy

English Title

Ductile fracture predictions in small punch testing of cold-rolled aluminium alloy

Type

journal article in Web of Science

Language

en

Original Abstract

The ductile fracture has been observed in large as well as small scales. Three chosen Lode and pressure dependent phenomenological ductile fracture criteria with cut-offs were calibrated for aluminium alloy EN AW 2024-T351 using an enhanced hybrid experimental–numerical technique. It consisted of calibrating all the material constants of fracture criteria altogether. This enabled ready determination of the cut-off related constant for one of those criteria. Moreover, a non-quadratic Lode dependent plasticity model was coupled with the ductile failure criteria to form the damage plasticity approach in the numerical analysis. The fracture criteria were calibrated using the standard – large – sized specimens including a non-standard upsetting test. The specimens used for the calibration of failure criteria are usually ten times larger than that of a specimen for the small punch test. The transferability of calibrated parameters was tested and fair predictability was observed for all numerical models when applied to small scales.

English abstract

The ductile fracture has been observed in large as well as small scales. Three chosen Lode and pressure dependent phenomenological ductile fracture criteria with cut-offs were calibrated for aluminium alloy EN AW 2024-T351 using an enhanced hybrid experimental–numerical technique. It consisted of calibrating all the material constants of fracture criteria altogether. This enabled ready determination of the cut-off related constant for one of those criteria. Moreover, a non-quadratic Lode dependent plasticity model was coupled with the ductile failure criteria to form the damage plasticity approach in the numerical analysis. The fracture criteria were calibrated using the standard – large – sized specimens including a non-standard upsetting test. The specimens used for the calibration of failure criteria are usually ten times larger than that of a specimen for the small punch test. The transferability of calibrated parameters was tested and fair predictability was observed for all numerical models when applied to small scales.

Keywords

Displacement force relation; Dynamic; Elastic plastic solids; Failure; Yield

Released

01.02.2019

Pages from

509

Pages to

525

Pages count

17

BibTex


@article{BUT151747,
  author="František {Šebek} and Namsu {Park} and Petr {Kubík} and Jindřich {Petruška} and Josef {Zapletal}",
  title="Ductile fracture predictions in small punch testing of cold-rolled aluminium alloy",
  annote="The ductile fracture has been observed in large as well as small scales. Three chosen Lode and pressure dependent phenomenological ductile fracture criteria with cut-offs were calibrated for aluminium alloy EN AW 2024-T351 using an enhanced hybrid experimental–numerical technique. It consisted of calibrating all the material constants of fracture criteria altogether. This enabled ready determination of the cut-off related constant for one of those criteria. Moreover, a non-quadratic Lode dependent plasticity model was coupled with the ductile failure criteria to form the damage plasticity approach in the numerical analysis. The fracture criteria were calibrated using the standard – large – sized specimens including a non-standard upsetting test. The specimens used for the calibration of failure criteria are usually ten times larger than that of a specimen for the small punch test. The transferability of calibrated parameters was tested and fair predictability was observed for all numerical models when applied to small scales.",
  chapter="151747",
  doi="10.1016/j.engfracmech.2018.11.045",
  howpublished="print",
  number="1",
  volume="206",
  year="2019",
  month="february",
  pages="509--525",
  type="journal article in Web of Science"
}