Publication detail

Crack propagation in mixed-mode specimens described via multi-parameter fracture mechanics

MALÍKOVÁ, L. MIARKA, P. ŠIMONOVÁ, H.

Original Title

Crack propagation in mixed-mode specimens described via multi-parameter fracture mechanics

Type

conference paper

Language

English

Original Abstract

The main objective of the paper is to employ a multi-parameter fracture mechanics concept to describe crack propagation through a specimen loaded in mixed-mode. This concept in particular was used because it has been shown that application of the generalized fracture mechanics concept can play a key role for materials with specific fracture behaviour, i.e. when fracture processes occur not only in the very vicinity of the crack tip, but also at larger distances from it. Two mixed-mode (I+II) geometries for the investigation of crack behaviour are presented here. The Williams series expansion is used for crack-tip stress field approximation. Then, considering the higher-order terms of the Williams expansion with regard to maximum tangential stress criterion can provide better estimates of the crack deflection angle. The coefficients of the Williams expansion were determined by means of the over-deterministic method for the purposes of this work. This analysis was performed for each cracked configuration, which is very time-consuming and makes the analysis very extensive. The crack propagation angle obtained by means of the generalized fracture criterion is discussed in detail. It was found that single-parameter fracture mechanics is sufficient when applied close to the crack tip and when mode I of loading prevails, while multi-parameter fracture mechanics can be recommended at larger distances from the crack tip and for configurations where mode II becomes dominant.

Keywords

mixed-mode, crack propagation, fracture mechanics

Authors

MALÍKOVÁ, L.; MIARKA, P.; ŠIMONOVÁ, H.

Released

8. 10. 2019

Publisher

IOP Publishing

Location

Bristol

ISBN

1757-899X

Periodical

IOP Conference Series: Materials Science and Engineering

Year of study

629

State

United Kingdom of Great Britain and Northern Ireland

Pages from

1

Pages to

5

Pages count

5

URL

https://iopscience.iop.org/article/10.1088/1757-899X/629/1/012013

Full text in the Digital Library

http://hdl.handle.net/11012/200424

BibTex

@inproceedings{BUT159388,
  author="Lucie {Malíková} and Petr {Miarka} and Hana {Šimonová}",
  title="Crack propagation in mixed-mode specimens described via multi-parameter fracture mechanics",
  booktitle="The 2nd International Conference on Material Strength and Applied Mechanics, 27–30 May 2019, Kiev, Ukraine",
  year="2019",
  journal="IOP Conference Series: Materials Science and Engineering",
  volume="629",
  pages="1--5",
  publisher="IOP Publishing",
  address="Bristol",
  doi="10.1088/1757-899X/629/1/012013",
  issn="1757-899X",
  url="https://iopscience.iop.org/article/10.1088/1757-899X/629/1/012013"
}