Detail publikace

Vliv velikosti a geometrie zkušebního tělesa na rozsah a tvar lomové procesní zóny a lomovou energii cementových kompozitů

VESELÝ, V. ŘOUTIL, L. KERŠNER, Z.

Originální název

Vliv velikosti a geometrie zkušebního tělesa na rozsah a tvar lomové procesní zóny a lomovou energii cementových kompozitů

Anglický název

Influence of testing specimen size and geometry on size and shape o fracture process zone and fracture energy of cementitious composites

Typ

článek ve sborníku ve WoS nebo Scopus

Jazyk

čeština

Originální abstrakt

This paper is focused on shape and size of fracture process zone (FPZ) of quasi-britlle materials, and energy dissipated within this zone (local fracture energy) during fracture process. Fracture energy concept is investigated here using two non-linear approaches to modelling of quasi-brittle fracture: cohesive crack models and equivalent elastic crack models. Presented paper deals with the influence of specimen size and relative notch length on the value of local fracture energy and profile of FPZ. The research is conducted by means of numerical simulations of three-point bending tests of notched beams with three specimen sizes - width of specimens W = 80, 320, and 1280 mm. The simulations of fracture tests are performed by using ATENA finite element method software.

Anglický abstrakt

This paper is focused on shape and size of fracture process zone (FPZ) of quasi-britlle materials, and energy dissipated within this zone (local fracture energy) during fracture process. Fracture energy concept is investigated here using two non-linear approaches to modelling of quasi-brittle fracture: cohesive crack models and equivalent elastic crack models. Presented paper deals with the influence of specimen size and relative notch length on the value of local fracture energy and profile of FPZ. The research is conducted by means of numerical simulations of three-point bending tests of notched beams with three specimen sizes - width of specimens W = 80, 320, and 1280 mm. The simulations of fracture tests are performed by using ATENA finite element method software.

Klíčová slova

fracture process zone, quasi-brittle materials, local fracture energy, modelling, geometry effect, size effect

Klíčová slova v angličtině

fracture process zone, quasi-brittle materials, local fracture energy, modelling, geometry effect, size effect

Autoři

VESELÝ, V.; ŘOUTIL, L.; KERŠNER, Z.

Rok RIV

2007

Vydáno

31. 10. 2007

Místo

Brno, Česká republika

ISBN

978-80-254-0725-7

Kniha

Křehký lom 2007

Strany od

275

Strany do

284

Strany počet

10

BibTex

@inproceedings{BUT27826,
  author="Václav {Veselý} and Ladislav {Řoutil} and Zbyněk {Keršner}",
  title="Vliv velikosti a geometrie zkušebního tělesa na rozsah a tvar lomové procesní zóny a lomovou energii cementových kompozitů",
  booktitle="Křehký lom 2007",
  year="2007",
  pages="275--284",
  address="Brno, Česká republika",
  isbn="978-80-254-0725-7"
}