Detail publikace
Vliv volného povrchu na lomové chování v gradientních materiálech s trhlinou
ŠEVČÍK, M. HUTAŘ, P. NÁHLÍK, L.
Český název
Vliv volného povrchu na lomové chování v gradientních materiálech s trhlinou
Anglický název
Effect of the free surface on crack behaviour in cracked graded structures
Typ
článek ve sborníku ve WoS nebo Scopus
Jazyk
en
Originální abstrakt
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.
Český abstrakt
V práci byl studován vliv volného povrchu na lomové chování v gradientních materiálech s trhlinou.
Anglický abstrakt
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.
Klíčová slova česky
trhlina; volný povrch; gradientní materiály; MKP modelování
Klíčová slova anglicky
crack; free-surface effect; graded materials; FEM modelling
Rok RIV
2010
Vydáno
08.11.2010
Nakladatel
University of West Bohemia, Plzeň
Místo
University of West Bohemia, Plzeň
ISBN
978-80-7043-919-7
Kniha
26th conference Computational Mechanics 2010 - Extended Abstracts
Strany od–do
1–2
Počet stran
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",
month="November",
pages="1--2",
publisher="University of West Bohemia, Plzeň",
address="University of West Bohemia, Plzeň",
isbn="978-80-7043-919-7"
}