Publication detail

Cracked volume specified work of fracture.

VESELÝ, V. FRANTÍK, P. KERŠNER, Z.

Original Title

Cracked volume specified work of fracture.

Type

conference paper

Language

English

Original Abstract

The paper introduces a method for the determination of fracture mechanics parameters of quasi-brittle materials based on specification of the energy dissipated in the non-linear zone at the macroscopic crack tip (the zone in which the failure mechanisms occur during the fracture process in these materials) according to the volume of this zone. For an estimation of the size and shape of the zone evolving at the crack tip which is in the case of quasi-brittle materials referred to as the fracture process zone (FPZ) - a special technique is being developed. The procedure is based on a general description of the stress field in cracked bodies carried out byWilliams power series in combination with the philosophy and selected features of classical non-linear fracture models for concrete, i.e. equivalent elastic crack models and cohesive crack models. The estimation of FPZ development during fracture, as well as the analysis of the progress of the energy quantity dissipated there, is illustrated in the paper for the case of numerically simulated fracture tests on notched beams under three-point bending.

Keywords

fracture, quasi-brittle, fracture process zone, work of fracture, materiál property, boundary effect

Authors

VESELÝ, V.; FRANTÍK, P.; KERŠNER, Z.

RIV year

2009

Released

1. 9. 2009

Location

Funchal, Madeira, Portugalsko

ISBN

978-1-905088-30-0

Book

Proceedings of the Twelfth International Conference on Civil, Structural and Environmental Engineering Computing

Pages from

1

Pages to

18

Pages count

18

BibTex

@inproceedings{BUT32251,
  author="Václav {Veselý} and Petr {Frantík} and Zbyněk {Keršner}",
  title="Cracked volume specified work of fracture.",
  booktitle="Proceedings of the Twelfth International Conference on Civil, Structural and Environmental Engineering Computing",
  year="2009",
  pages="1--18",
  address="Funchal, Madeira, Portugalsko",
  isbn="978-1-905088-30-0"
}