Detail publikace

Structural geometry, fracture process zone and fracture energy

VESELÝ, V. ŘOUTIL, L. KERŠNER, Z.

Originální název

Structural geometry, fracture process zone and fracture energy

Typ

článek ve sborníku ve WoS nebo Scopus

Jazyk

angličtina

Originální abstrakt

This paper is focused on the influence of structural size and geometry on the size and shape of the fracture process zone (FPZ), and consequently on the progress of the fracture energy dissipated within the FPZ during the fracture process in structures made of quasi-brittle materials. The effect of structural geometry on its fracture behaviour is described here by two-parameter fracture mechanics, in particular by the constraint of stress near the equivalent elastic crack tip. The local fracture energy concept is evolved. Attention is paid to finding the intermediate stage of the fracture when there is no direct influence of the specimen boundary on the FPZ size and shape (and consequently the value of fracture energy dissipated within it). The research was conducted by means of numerical simulations of fracture tests in two testing configurations with different constraint conditions. The features of the distribution of local/averaged fracture energy along the specimen ligament are discussed. Based on the courses of these functions, it is shown that the size and shape of the FPZ are strongly influenced by structural size and geometry.

Klíčová slova

structural size, structural geometry, fracture process zone, fracture energy, quasi-brittle material

Autoři

VESELÝ, V.; ŘOUTIL, L.; KERŠNER, Z.

Rok RIV

2007

Vydáno

17. 6. 2007

Místo

Catania, Itálie

ISBN

978-0-415-44065-3

Kniha

New trends in fracture mechanics on concrete

Strany od

111

Strany do

118

Strany počet

8

BibTex

@inproceedings{BUT27830,
  author="Václav {Veselý} and Ladislav {Řoutil} and Zbyněk {Keršner}",
  title="Structural geometry, fracture process zone and fracture energy",
  booktitle="New trends in fracture mechanics on concrete",
  year="2007",
  pages="111--118",
  address="Catania, Itálie",
  isbn="978-0-415-44065-3"
}