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MALÍKOVÁ, L. MIARKA, P. ŠIMONOVÁ, H.
Original Title
Crack deflection under mixed-mode loading investigated via generalized MTS criterion
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
1
Pages to
8
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" }