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VYHLÍDAL, M. KLUSÁK, J.
Original Title
The influence of polygonal cavity on fracture behaviour of concrete
Type
conference paper
Language
English
Original Abstract
In this work, the influence of polygonal cavity on fracture behaviour of cement composite (concrete) is investigated. Specimens of the nominal dimensions 40 × 40 × 160 mm with polygonal cavity of 8 × 8 × 40 mm were provided with an initial central edge notch with a depth 12 mm, which was made by diamond blade saw. To determine the influence of polygonal cavity on fracture behaviour, fracture tests were conducted via three-point bending. The aim of this work is to analyse the behaviour of such specimen by means of finite element method (FEM) principles in Ansys, Inc. software. For this reason, a simplified 2D model was created for plane strain conditions and based on the fracture test configuration. The crack propagation assessment was based on generalized fracture mechanics approaches using a criterion of an average value of tangential stress determined in dependence on the polar angle θ. Results of numerical analysis indicates that the actual crack depth must be greater than it supposed. In other words, diamond blade saw damage the specimen more than expected.
Keywords
Average tangential stress, Finite element method, Fracture mechanics, Polygonal cavity
Authors
VYHLÍDAL, M.; KLUSÁK, J.
Released
25. 8. 2019
Publisher
Elsevier
Location
Online
ISBN
2452-3216
Periodical
Procedia Structural Integrity
Year of study
17
Number
1
State
Republic of Italy
Pages from
690
Pages to
697
Pages count
8
URL
https://www.sciencedirect.com/science/article/pii/S2452321619302975?via%3Dihub
BibTex
@inproceedings{BUT158150, author="Michal {Vyhlídal} and Jan {Klusák}", title="The influence of polygonal cavity on fracture behaviour of concrete", booktitle="Procedia Structural Integrity", year="2019", journal="Procedia Structural Integrity", volume="17", number="1", pages="690--697", publisher="Elsevier", address="Online", doi="10.1016/j.prostr.2019.08.092", issn="2452-3216", url="https://www.sciencedirect.com/science/article/pii/S2452321619302975?via%3Dihub" }