Publication result detail

Estimation of the plastic zone size from the multi-parameter/generalized form of fracture criteria on various mode I geometries

MALÍKOVÁ, L.

Original Title

Estimation of the plastic zone size from the multi-parameter/generalized form of fracture criteria on various mode I geometries

English Title

Estimation of the plastic zone size from the multi-parameter/generalized form of fracture criteria on various mode I geometries

Type

Paper in proceedings (conference paper)

Original Abstract

Three cracked geometries loaded in mode I are investigated and the plastic zone size calculated. For estimation of the plastic zone size, two fracture criteria are used (Rankine and von Mises). Whereas the classical criteria give the same results (the stress intensity factor being identical for each geometry), the data from numerical simulations exhibit differences for various geometries. It is shown that the multi-parameter form of the criteria enables to obtain results that agree better to the numerical ones. Particularly, the Williams expansion is utilized for approximation of the stress components that serve as inputs for the fracture criteria. It is concluded that taking into account several more initial terms of the series can help to predict the plastic zone size more accurately.

English abstract

Three cracked geometries loaded in mode I are investigated and the plastic zone size calculated. For estimation of the plastic zone size, two fracture criteria are used (Rankine and von Mises). Whereas the classical criteria give the same results (the stress intensity factor being identical for each geometry), the data from numerical simulations exhibit differences for various geometries. It is shown that the multi-parameter form of the criteria enables to obtain results that agree better to the numerical ones. Particularly, the Williams expansion is utilized for approximation of the stress components that serve as inputs for the fracture criteria. It is concluded that taking into account several more initial terms of the series can help to predict the plastic zone size more accurately.

Keywords

Crack-tip stress field, Williams expansion, higher-order terms, fracture mechanics, plastic zone size

Key words in English

Crack-tip stress field, Williams expansion, higher-order terms, fracture mechanics, plastic zone size

Authors

MALÍKOVÁ, L.

RIV year

2016

Released

07.05.2015

ISBN

978-80-970964-9-6

Book

11th International Conference on Local Mechanical Properties, LMP 2014

ISBN

1662-9795

Periodical

Key Engineering Materials (web)

Volume

2015

Number

662

State

Swiss Confederation

Pages from

169

Pages to

172

Pages count

4

BibTex

@inproceedings{BUT120843,
  author="Lucie {Malíková}",
  title="Estimation of the plastic zone size from the multi-parameter/generalized form of fracture criteria on various mode I geometries",
  booktitle="11th International Conference on Local Mechanical Properties, LMP 2014",
  year="2015",
  journal="Key Engineering Materials (web)",
  volume="2015",
  number="662",
  pages="169--172",
  isbn="978-80-970964-9-6",
  issn="1662-9795"
}