Publication detail

Verification of Linear Dependence of Plastic Zone Size on J-integral for Mixed-mode Loading

ŽÁK, S. HORNÍKOVÁ, J. ŠANDERA, P. POKLUDA, J.

Original Title

Verification of Linear Dependence of Plastic Zone Size on J-integral for Mixed-mode Loading

Type

journal article - other

Language

English

Original Abstract

Determination of fatigue crack growth characteristics under shear-mode loading is a rather complicated problem. To increase an efficiency and precision of such testing, special specimens enabling simultaneous propagation of shear cracks under II, III and II+III loading modes started to be used rather recently. However, a description of crack growth rate in terms of appropriate fracture mechanics quantities demands a precise assessment of plastic zone size under various shear-mode loading levels. This contribution is focused on the numerical elasto-plastic analysis of stress-strain field at the crack tip in specimens made of a pure polycrystalline (ARMCO) iron loaded by mixed mode II+III. The dependence of plastic zone size on the J-integral value described the wide region of loading. The results reveal that formixed mode II+III the small scale yielding conditions are fulfilled in the region where plastic zone size is smaller than 1/10 of the total crack length.

Keywords

Crack Growth, J- Integral, Mixed Mode Loading, Plastic Zone Size, Shear-Mode Cracks

Authors

ŽÁK, S.; HORNÍKOVÁ, J.; ŠANDERA, P.; POKLUDA, J.

RIV year

2015

Released

1. 4. 2015

ISBN

1660-9336

Periodical

Applied Mechanics and Materials

Year of study

751

Number

1

State

Swiss Confederation

Pages from

15

Pages to

20

Pages count

6

BibTex

@article{BUT114709,
  author="Stanislav {Žák} and Jana {Horníková} and Pavel {Šandera} and Jaroslav {Pokluda}",
  title="Verification of Linear Dependence of Plastic Zone Size on J-integral for Mixed-mode Loading",
  journal="Applied Mechanics and Materials",
  year="2015",
  volume="751",
  number="1",
  pages="15--20",
  doi="10.4028/www.scientific.net/AMM.751.15",
  issn="1660-9336"
}