Detail publikace

Estimation of critical applied stress for crack initiation from a sharp V-notch

NÁHLÍK, L. ŠTEGNEROVÁ, K. HUTAŘ, P.

Originální název

Estimation of critical applied stress for crack initiation from a sharp V-notch

Typ

článek v časopise ve Web of Science, Jimp

Jazyk

angličtina

Originální abstrakt

The aim of this paper is to estimate the critical applied stress value for a crack initiated from a sharp V-notch tip. The classical approach of 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 to determine the stress distribution near the sharp V-notch tip and for estimating the generalized stress intensity factor depending on the V-notch opening angle. The critical value of the generalized stress intensity factor was obtained using stability criteria based on the tangential stress component averaged over a critical distance from the V-notch tip and the generalized strain energy density factor. These criteria were applied in the case of corner stress singularity, as well. The calculated values of the critical applied stresses were compared with the experimental data from the literature, and the applicability of the LEFM concept is discussed.

Klíčová slova

Generalized linear elastic fracture mechanics, V-notch, generalized stress intenzity factor, mean stress criterion, critical stress

Autoři

NÁHLÍK, L.; ŠTEGNEROVÁ, K.; HUTAŘ, P.

Vydáno

12. 3. 2018

Nakladatel

2017 Elsevier Ltd. All rights reserved.

ISSN

0167-8442

Periodikum

Theoretical and Applied Fracture Mechanics

Číslo

93

Stát

Nizozemsko

Strany od

247

Strany do

262

Strany počet

16

BibTex

@article{BUT156228,
  author="Luboš {Náhlík} and Kateřina {Štegnerová} and Pavel {Hutař}",
  title="Estimation of critical applied stress for crack initiation from a sharp V-notch",
  journal="Theoretical and Applied Fracture Mechanics",
  year="2018",
  number="93",
  pages="247--262",
  doi="10.1016/j.tafmec.2017.09.002",
  issn="0167-8442"
}