Publication result detail

Plastic zone extent in a CCT specimen determined from the crack-tip stress field approximated by means of the Williams expansion

MALÍKOVÁ, L.

Original Title

Plastic zone extent in a CCT specimen determined from the crack-tip stress field approximated by means of the Williams expansion

English Title

Plastic zone extent in a CCT specimen determined from the crack-tip stress field approximated by means of the Williams expansion

Type

Paper in proceedings (conference paper)

Original Abstract

A plate with a central crack under uniaxial tension is studied in this work in order to discuss the influence of the number of terms considered in the Williams expansion (derived for approximation of the crack tip stress field) on the plastic zone size. Two criteria are introduced: Rankine criterion and von Mises criterion. Comparison between FEM solution and results obtained by means of the Williams expansion shows that whereas for short cracks the classical one-parameter fracture mechanics can be used, the plastic zone extent estimated via the Williams expansion for longer cracks agrees better to the numerical solution if more than only the first term of the series is considered.

English abstract

A plate with a central crack under uniaxial tension is studied in this work in order to discuss the influence of the number of terms considered in the Williams expansion (derived for approximation of the crack tip stress field) on the plastic zone size. Two criteria are introduced: Rankine criterion and von Mises criterion. Comparison between FEM solution and results obtained by means of the Williams expansion shows that whereas for short cracks the classical one-parameter fracture mechanics can be used, the plastic zone extent estimated via the Williams expansion for longer cracks agrees better to the numerical solution if more than only the first term of the series is considered.

Keywords

Williams power expansion, Plastic zone extent, Crack-tip field, Over-deterministic method, Multi-parameter fracture mechanics

Key words in English

Williams power expansion, Plastic zone extent, Crack-tip field, Over-deterministic method, Multi-parameter fracture mechanics

Authors

MALÍKOVÁ, L.

RIV year

2015

Released

12.05.2014

Location

Svratka, Česká republika

ISBN

978-80-214-4871-1

Book

Engineering Mechanics 2014

Pages from

1

Pages to

4

Pages count

4

BibTex

@inproceedings{BUT114049,
  author="Lucie {Malíková}",
  title="Plastic zone extent in a CCT specimen determined from the crack-tip stress field approximated by means of the Williams expansion",
  booktitle="Engineering Mechanics 2014",
  year="2014",
  pages="1--4",
  address="Svratka, Česká republika",
  isbn="978-80-214-4871-1"
}