Publication result detail

A comparison of crack paths in brazilian disc specimen by using various criteria for crack growth

MIARKA, P.; FURGIERI, G.; SEITL, S.; RŮŽIČKA, V.; MERTA, I.

Original Title

A comparison of crack paths in brazilian disc specimen by using various criteria for crack growth

English Title

A comparison of crack paths in brazilian disc specimen by using various criteria for crack growth

Type

Paper in proceedings (conference paper)

Original Abstract

A numerical parametric study of the crack propagation under various level of mixed-mode conditions is evaluated. By focusing of the Linear Elastic Fracture Mechanics, the model of concrete Brazilian Disc Test with a central notch is considered and its analysis with defined radius R, force P and material properties is performed. The results are obtained by varying the length a of the central notch and its angle of inclination α with respect to the horizontal axis. The crack growth direction is estimated through three different criteria: the maximum tangential stress criterion, the strain energy density criterion and the crack tip displacement criterion. This study involves the classical single-parameter fracture mechanics concept, in which the stress distribution in a cracked specimen is described by the stress intensity factors. The Williams solution of the crack-tip stress and displacement fields are taken into account. As a comparison, the solution is also provided with J-Integral. The model is created with the finite element method software ANSYS. Lastly, the suggested crack paths obtained by criteria are compared with experimental data.

English abstract

A numerical parametric study of the crack propagation under various level of mixed-mode conditions is evaluated. By focusing of the Linear Elastic Fracture Mechanics, the model of concrete Brazilian Disc Test with a central notch is considered and its analysis with defined radius R, force P and material properties is performed. The results are obtained by varying the length a of the central notch and its angle of inclination α with respect to the horizontal axis. The crack growth direction is estimated through three different criteria: the maximum tangential stress criterion, the strain energy density criterion and the crack tip displacement criterion. This study involves the classical single-parameter fracture mechanics concept, in which the stress distribution in a cracked specimen is described by the stress intensity factors. The Williams solution of the crack-tip stress and displacement fields are taken into account. As a comparison, the solution is also provided with J-Integral. The model is created with the finite element method software ANSYS. Lastly, the suggested crack paths obtained by criteria are compared with experimental data.

Keywords

Crack propagation direction, Mixed-mode I/II, Crack-tip field, Single-parameter MTS/SED/CTD criteria, JIntegral.

Key words in English

Crack propagation direction, Mixed-mode I/II, Crack-tip field, Single-parameter MTS/SED/CTD criteria, JIntegral.

Authors

MIARKA, P.; FURGIERI, G.; SEITL, S.; RŮŽIČKA, V.; MERTA, I.

RIV year

2020

Released

24.05.2019

Location

Ostrava

ISBN

978-80-248-4296-7

Book

17th International Conference Modelling in Mechanics

Pages from

1

Pages to

5

Pages count

5

URL

https://www.fast.vsb.cz/export/sites/fast/228/cs/konference-a-seminare/modelovani-v-mechanice/mm2019_sbornik_abstraktu.pdf

BibTex

@inproceedings{BUT158780,
  author="Petr {Miarka} and Guido {Furgieri} and Stanislav {Seitl} and Vladimír {Růžička} and Ildiko {Merta}",
  title="A comparison of crack paths in brazilian disc specimen by using various criteria for crack growth
",
  booktitle="17th International Conference Modelling in Mechanics",
  year="2019",
  pages="1--5",
  address="Ostrava",
  isbn="978-80-248-4296-7",
  url="https://www.fast.vsb.cz/export/sites/fast/228/cs/konference-a-seminare/modelovani-v-mechanice/mm2019_sbornik_abstraktu.pdf"
}