Publication detail

Crack deflection under mixed-mode loading investigated via generalized MTS criterion

MALÍKOVÁ, L. MIARKA, P. ŠIMONOVÁ, H.

Original Title

Type

conference paper

Language

English

Original Abstract

The paper deals with investigations of a crack propagating in a semi-circular concrete disc loaded in bending. Various crack inclination angles ensure different degrees of I+II mixed-mode conditions. Generally, concrete material exhibits quasi-brittle fracture behavior, which is difficult to describe. It has been shown that fracture in this kind of material occurs in a larger zone around the crack tip. Thus, the multi-parameter fracture mechanics concept can help to understand the facture response better. Particularly, the Williams power expansion with a selected number of its initial terms is used for approximation of the crack-tip stress/displacement field. The over-deterministic method together with a finite element analysis of the problem is used for calculation of the coefficients of the series. The deflection angle of the initial crack is then assessed via generalized/multi-parameter form of Maximum Tangential Stress (MTS) criterion in dependence on various parameters. The theoretical results are compared to experimentally obtained data. The results prove that the multi-parameter description of the crack-tip fields can bring more accurate assessment of the fracture response of a crack under mixed-mode loading.

Keywords

mixed-mode, crack deflection, MTS criterion,semi-circular disc

Authors

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

Released

30. 11. 2020

Publisher

AIP Publishing

Location

Melville, NY

ISBN

0094-243X

Periodical

AIP conference proceedings

Year of study

2309

State

United States of America

Pages from

Pages to

Pages count

BibTex

@inproceedings{BUT166250,
  author="Lucie {Malíková} and Petr {Miarka} and Hana {Šimonová}",
  title="Crack deflection under mixed-mode loading investigated via generalized MTS criterion",
  booktitle="FRACTURE AND DAMAGE MECHANICS: Theory, Simulation and Experiment",
  year="2020",
  journal="AIP conference proceedings",
  volume="2309",
  pages="1--8",
  publisher="AIP Publishing",
  address="Melville, NY",
  doi="10.1063/5.0034664",
  issn="0094-243X"
}