Publication detail

Critical applied stresses for a crack initiation from a sharp V-notch

NÁHLÍK, L. ŠTEGNEROVÁ, K. HUTAŘ, P.

Original Title

Critical applied stresses for a crack initiation from a sharp V-notch

Type

journal article in Scopus

Language

English

Original Abstract

The aim of the paper is to estimate a value of the critical applied stress for a crack initiation from a sharp V-notch tip. The classical approach of the linear elastic fracture mechanics (LELM) was generalized, because the stress singularity exponent differs from 0.5 in the studied case. The value of the stress singularity exponent depends on the V-notch opening angle. The finite element method was used for a determination of stress distribution in the vicinity of the sharp V-notch tip and for the estimation of the generalized stress intensity factor depending on the V-notch opening angle. Critical value of the generalized stress intensity factor was obtained using stability criteria based on the opening stress component averaged over a critical distance d from the V-notch tip and generalized strain energy density factor. Calculated values of the critical applied stresses were compared with experimental data from the literature and applicability of the LEFM concept is discussed.

Keywords

Crack initiation; V-notch; critical stress; strain energy density factor; generalized linear elastic fracture mechanics; fracture criteria.

Authors

NÁHLÍK, L.; ŠTEGNEROVÁ, K.; HUTAŘ, P.

RIV year

2014

Released

31. 10. 2014

Publisher

Gruppo Italiano Frattura

ISBN

1971-8993

Periodical

Frattura ed Integrita Strutturale

Year of study

8

Number

30

State

Republic of Italy

Pages from

55

Pages to

61

Pages count

7

URL

https://www.fracturae.com/index.php/fis/article/view/1286

Full text in the Digital Library

http://hdl.handle.net/11012/180640

BibTex

@article{BUT110393,
  author="Luboš {Náhlík} and Pavel {Hutař} and Kateřina {Štegnerová}",
  title="Critical applied stresses for a crack initiation from a sharp V-notch",
  journal="Frattura ed Integrita Strutturale",
  year="2014",
  volume="8",
  number="30",
  pages="55--61",
  doi="10.3221/IGF-ESIS.30.08",
  issn="1971-8993",
  url="https://www.fracturae.com/index.php/fis/article/view/1286"
}