Publication result detail

Fatigue crack shape prediction based on vertex singularity

HUTAŘ, P.; NÁHLÍK, L.

Original Title

Fatigue crack shape prediction based on vertex singularity

English Title

Fatigue crack shape prediction based on vertex singularity

Type

Peer-reviewed article not indexed in WoS or Scopus

Original Abstract

Due to the existence of vertex singularity at the point where the crack intersects the free surface, stress distri-bution around the crack tip and the type of the singularity is changed. In the interior of the specimen the classical singular behaviour of the crack is dominant and can be described using analytic equations. Contrary to this, at the free surface or in the boundary layer close to free surface the vertex singularity is significant. The influence of vertex singularity on crack behaviour and a crack shape for a three-dimensional structure is described in this paper. The results presented make it possible to estimate fatigue crack growth rate and crack shape using the concept of the generalized stress intensity factor. The estimated fatigue crack shape can help to provide a more reliable estimation of the fatigue life of the structures considered.

English abstract

Due to the existence of vertex singularity at the point where the crack intersects the free surface, stress distri-bution around the crack tip and the type of the singularity is changed. In the interior of the specimen the classical singular behaviour of the crack is dominant and can be described using analytic equations. Contrary to this, at the free surface or in the boundary layer close to free surface the vertex singularity is significant. The influence of vertex singularity on crack behaviour and a crack shape for a three-dimensional structure is described in this paper. The results presented make it possible to estimate fatigue crack growth rate and crack shape using the concept of the generalized stress intensity factor. The estimated fatigue crack shape can help to provide a more reliable estimation of the fatigue life of the structures considered.

Keywords

3D vertex singularity, crack shape, fatigue crack propagation

Key words in English

3D vertex singularity, crack shape, fatigue crack propagation

Authors

HUTAŘ, P.; NÁHLÍK, L.

RIV year

2012

Released

10.12.2008

Publisher

University of West Bohemia

Location

Plzeň

ISBN

1802-680X

Periodical

Applied andComputational Mechanics

Volume

2

Number

1

State

Czech Republic

Pages from

45

Pages to

53

Pages count

8

BibTex

@article{BUT48302,
  author="Pavel {Hutař} and Luboš {Náhlík}",
  title="Fatigue crack shape prediction based on vertex singularity",
  journal="Applied andComputational Mechanics",
  year="2008",
  volume="2",
  number="1",
  pages="45--53",
  issn="1802-680X"
}