Publication detail

Effect of the free surface on crack behaviour in cracked graded structures

ŠEVČÍK, M. HUTAŘ, P. NÁHLÍK, L.

Original Title

Effect of the free surface on crack behaviour in cracked graded structures

Type

conference paper

Language

English

Original Abstract

The aim of the paper is to study the free surface effect on crack behaviour of a crack located in a graded structure. For a determination of the effect the geometry of a Single Edge Crack Tension (SECT) specimen with graded region between two homogenous basic materials is used in numerical simulations. A continuous and smooth graded structure is modelled with various magnitude of non-homogeneity. Fracture parameters are calculated along the crack front for different crack length. The influence of crack length on the size of free surface affected region has been studied by estimating the stress singularity exponent p along the crack front, see Fig. 4. The effect of free surface was getting more significant with increasing crack length. The value of the stress singularity exponent decreases on the free surface to 90% of the magnitude in the middle of the specimen for all studied crack lengths.

Keywords

crack; free-surface effect; graded materials; FEM modelling

Authors

ŠEVČÍK, M.; HUTAŘ, P.; NÁHLÍK, L.

RIV year

2010

Released

8. 11. 2010

Publisher

University of West Bohemia, Plzeň

Location

University of West Bohemia, Plzeň

ISBN

978-80-7043-919-7

Book

26th conference Computational Mechanics 2010 - Extended Abstracts

Pages from

1

Pages to

2

Pages count

2

BibTex

@inproceedings{BUT35915,
  author="Martin {Ševčík} and Pavel {Hutař} and Luboš {Náhlík}",
  title="Effect of the free surface on crack behaviour in cracked graded structures",
  booktitle="26th conference Computational Mechanics 2010 - Extended Abstracts",
  year="2010",
  pages="1--2",
  publisher="University of West Bohemia, Plzeň",
  address="University of West Bohemia, Plzeň",
  isbn="978-80-7043-919-7"
}