Publication detail

Lode dependent plasticity in the prediction of deformation states of tensile specimens

KUBÍK, P. PETRUŠKA, J. VOSYNEK, P. ŠEBEK, F.

Czech title

Plasticita závislá na Lodem při predikci stavů deformace tahových vzorků

English title

Lode dependent plasticity in the prediction of deformation states of tensile specimens

Type

conference paper

Language

en

Original abstract

The plastic behavior of some polycrystalline metals exhibit the Lode dependence. There are many yield criteria, which are capable of such a description. Nevertheless, these criteria predict wrongly the deformation or the stress state or both in some cases. This paper focuses on the comparison of the deformation predicted by a classical von Mises yield criterion and advanced model, which covers the Lode dependence. The comparison was carried out using the tensile tests of two types of specimens manufactured from the aluminum alloy. The numerical simulations were conducted in the Abaqus/Explicit finite element commercial code and the material models were implemented using the user subroutine.

Czech abstract

Plastická deformace některých polykrystalických kovů vykazuje Lodeho závislost. Existuje mnoho podmínek plasticity, které jsou schopné takového popisu. Tyto podmínky nicméně predikují špatně deformaci nebo stav napjatosti nebo obojí v některých případech. Tento článek se zaměřuje na porovnání deformace predikované klasickou von Misesovou podmínkou plasticity a pokročilého modelu, který zahrnuje i Lodeho závislost. Porovnání bylo provedeno pomocí zkoušek tahem dvou typů vzorků vyrobených ze slitiny hliníku. Numerické simulace byly uskutečněny v komerčním konečnoprvkovém kódu Abaqus/Explicit and materiálové modely byly implementovány pomocí uživatelské procedury.

English abstract

The plastic behavior of some polycrystalline metals exhibit the Lode dependence. There are many yield criteria, which are capable of such a description. Nevertheless, these criteria predict wrongly the deformation or the stress state or both in some cases. This paper focuses on the comparison of the deformation predicted by a classical von Mises yield criterion and advanced model, which covers the Lode dependence. The comparison was carried out using the tensile tests of two types of specimens manufactured from the aluminum alloy. The numerical simulations were conducted in the Abaqus/Explicit finite element commercial code and the material models were implemented using the user subroutine.

Keywords in Czech

Pokročilá plasticita; zkouška tahem; tvoření krčku; funkce plasticity; slitina hliníku

Keywords in English

Advanced plasticity; tensile test; necking; yield function; aluminum alloy

Released

19.12.2019

ISSN

2452-3216

Book

9th International Conference Materials Structure & Micromechanics of Fracture (MSMF9)

Volume

23

Pages from–to

15–20

Pages count

6

BIBTEX


@inproceedings{BUT162361,
  author="Petr {Kubík} and Jindřich {Petruška} and Petr {Vosynek} and František {Šebek},
  title="Lode dependent plasticity in the prediction of deformation states of tensile specimens",
  booktitle="9th International Conference Materials Structure & Micromechanics of Fracture (MSMF9)",
  year="2019",
  volume="23",
  month="December",
  pages="15--20",
  issn="2452-3216"
}