Publication result detail

Modelling the R-curve behaviour in chevron-notched specimen using weight functions

KOTOUL, M.; VYSLOUŽIL, T.; DLOUHÝ, I.

Original Title

Modelling the R-curve behaviour in chevron-notched specimen using weight functions

English Title

Modelling the R-curve behaviour in chevron-notched specimen using weight functions

Type

Paper in proceedings (conference paper)

Original Abstract

The contribution deals with modeling of bridged crack in the chevron-notched three point bending specimen made of the glass matrix composite reinforced by long SiC fibres. Weight functions for orthotropic material are obtained numerically by means of detailed FEM analysis in the system ANSYS and they are further used together with a bridging model available in literature to theoretical prediction of R-curve. Material orthotropy is captured using Barnett-Lothe's tensors calculated directly from the elastic moduli of composite. Recurrent calculations for the crack opening displacement resulting from applied loading and bridging stresses were performed within the system MAPLE. Theoretical results are then compared with experimental data.

English abstract

The contribution deals with modeling of bridged crack in the chevron-notched three point bending specimen made of the glass matrix composite reinforced by long SiC fibres. Weight functions for orthotropic material are obtained numerically by means of detailed FEM analysis in the system ANSYS and they are further used together with a bridging model available in literature to theoretical prediction of R-curve. Material orthotropy is captured using Barnett-Lothe's tensors calculated directly from the elastic moduli of composite. Recurrent calculations for the crack opening displacement resulting from applied loading and bridging stresses were performed within the system MAPLE. Theoretical results are then compared with experimental data.

Keywords

R-curve modelling, weight functions, brittle matrix composites

Key words in English

R-curve modelling, weight functions, brittle matrix composites

Authors

KOTOUL, M.; VYSLOUŽIL, T.; DLOUHÝ, I.

Released

01.01.2005

Publisher

EC, Ltd., UK

Location

Eastleigh, England

ISBN

0-9547783-1-6

Book

Advances in Fracture and Damage Mechanics IV

Pages from

217

Pages count

9

BibTex

@inproceedings{BUT14893,
  author="Michal {Kotoul} and Tomáš {Vysloužil} and Ivo {Dlouhý}",
  title="Modelling the R-curve behaviour in chevron-notched specimen using weight functions",
  booktitle="Advances in Fracture and Damage Mechanics IV",
  year="2005",
  pages="9",
  publisher="EC, Ltd., UK",
  address="Eastleigh, England",
  isbn="0-9547783-1-6"
}