Publication detail

Modelling of size and shape of damage zone in quasi-brittle notched specimens – analytical approach based on fracture-mechanical evaluation of loading curves

KLON, J. VESELÝ, V.

Original Title

Modelling of size and shape of damage zone in quasi-brittle notched specimens – analytical approach based on fracture-mechanical evaluation of loading curves

Type

journal article in Web of Science

Language

English

Original Abstract

An analysis focused on capturing the phenomenon of quasibrittle fracture is presented. Selected parameters relevant for quasi-brittle fracture are evaluated and an assessment of their dependence on the size and shape of the test specimen is studied. Determination of these fracture characteristics is based on the records of the fracture tests on notched specimens, particularly from recorded loading diagrams. A method of separation of the energy amounts released for the propagation of the (effective) crack and that dissipated within the volume of a large nonlinear zone at the crack tip – the fracture process zone – is introduced and tested on selected data from experimental campaigns published in the literature. The work is accompanied with own conducted numerical simulations using commercial finite element code with implemented cohesive crack model. Results from three-point bending tests on specimens of different sizes and relative notch lengths are taken into account in this study. The proposed model has only two parameters whose values are constant for all specimen sizes and notch lengths.

Keywords

Quasi-brittle Fracture; Loading Curve; Work of Fracture; Resistance Curve; Effective Crack; Fracture Process Zone

Authors

KLON, J.; VESELÝ, V.

Released

1. 1. 2017

Publisher

Gruppo Italiano Frattura

ISBN

1971-8993

Periodical

Frattura ed Integrita Strutturale

Year of study

11

Number

39

State

Republic of Italy

Pages from

17

Pages to

28

Pages count

12

URL

http://www.gruppofrattura.it/pdf/rivista/numero39/numero_39_art_3.pdf

Full text in the Digital Library

http://hdl.handle.net/11012/180646

BibTex

@article{BUT131362,
  author="Jiří {Klon} and Václav {Veselý}",
  title="Modelling of size and shape of damage zone in quasi-brittle notched specimens – analytical approach based on fracture-mechanical evaluation of loading curves",
  journal="Frattura ed Integrita Strutturale",
  year="2017",
  volume="11",
  number="39",
  pages="17--28",
  doi="10.3221/IGF-ESIS.39.03",
  issn="1971-8993",
  url="http://www.gruppofrattura.it/pdf/rivista/numero39/numero_39_art_3.pdf"
}