Publication detail

The influence of polygonal cavity on fracture behaviour of concrete

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"
}