Publication result detail

Fracture mechanics of the three-dimensional crack front: vertex singularity versus out of plain constraint descriptions

HUTAŘ, P.; ŠEVČÍK, M.; NÁHLÍK, L.; ZOUHAR, M.; SEITL, S.; KNÉSL, Z.; FERNÁNDEZ-CANTELI, A.

Original Title

Fracture mechanics of the three-dimensional crack front: vertex singularity versus out of plain constraint descriptions

English Title

Fracture mechanics of the three-dimensional crack front: vertex singularity versus out of plain constraint descriptions

Type

Peer-reviewed article not indexed in WoS or Scopus

Original Abstract

The effect of a free surface on stress distribution along the three-dimensional crack front is discussed. Generalized stress intensity factor methodology and out-of-plane constraint based procedure are used for a reliable estimation of the stress state in front of the crack tip. The two present methodologies are discussed and compared. The out-of plane, in-plane constraint parameters and generalized stress intensity factor were estimated. It is shown significant changes of the singularity exponents and fracture parameters values close to the free surface. Therefore, conventional methodologies can lead to inaccurate description of the stress state and cannot be used for reliable description of fatigue crack propagation in this area.

English abstract

The effect of a free surface on stress distribution along the three-dimensional crack front is discussed. Generalized stress intensity factor methodology and out-of-plane constraint based procedure are used for a reliable estimation of the stress state in front of the crack tip. The two present methodologies are discussed and compared. The out-of plane, in-plane constraint parameters and generalized stress intensity factor were estimated. It is shown significant changes of the singularity exponents and fracture parameters values close to the free surface. Therefore, conventional methodologies can lead to inaccurate description of the stress state and cannot be used for reliable description of fatigue crack propagation in this area.

Keywords

in-plain constraint, out of plain constraint, vertex-singularity, linear elastic fracture mechanics

Key words in English

in-plain constraint, out of plain constraint, vertex-singularity, linear elastic fracture mechanics

Authors

HUTAŘ, P.; ŠEVČÍK, M.; NÁHLÍK, L.; ZOUHAR, M.; SEITL, S.; KNÉSL, Z.; FERNÁNDEZ-CANTELI, A.

RIV year

2012

Released

15.03.2010

Publisher

Elsevier Ltd.

ISBN

1877-7058

Periodical

Procedia Engineering

Volume

2

Number

1

State

United Kingdom of Great Britain and Northern Ireland

Pages from

2095

Pages to

2102

Pages count

8

BibTex

@article{BUT47310,
  author="Pavel {Hutař} and Martin {Ševčík} and Luboš {Náhlík} and Michal {Zouhar} and Stanislav {Seitl} and Zdeněk {Knésl} and Alfonso Fernández {Canteli}",
  title="Fracture mechanics of the three-dimensional crack front: vertex singularity versus out of plain constraint descriptions",
  journal="Procedia Engineering",
  year="2010",
  volume="2",
  number="1",
  pages="2095--2102"
}