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Statements

Subject Item
n2:RIV%2F68081723%3A_____%2F07%3A00094872%21RIV08-AV0-68081723
rdf:type
skos:Concept n19:Vysledek
dcterms:description
The influence of the singularity induced by the free surface on the behaviour of a body with a V-notch is investigated in this paper. Attention is focused mainly on the change of the singularity and the stress state through the thickness of a three-dimensional specimen. Numerical finite-element analysis of the tension loaded specimens with a V-notch were performed. The displacements and the stresses from the analysis were used to estimate the power of singularities using a log-log regression analysis along the crack front. It was found that in the middle of the specimen singularity of the V-notch is dominant this can be found using analytic equations describing two-dimensional stress distribution around the sharp V-notch. The thickness of boundary layer (region influenced by corner singularity) depends only on the Poisson's ratio of the material. The presented results can be used for a more reliable estimation of the free-surface effect on singular concentrator behaviour. Vliv singularity indukované na volném povrchu byl zkoumán na tělese s ostrým V-vrubem. Pomocí metody konečných prvků byla provedena analýza takového tělesa a stanoven průběh singularity po tloušťce vzorku. Bylo zjištěno, že velikost singularity směrem k volnému povrchu klesá až na hodnotu odpovídající rohové singularity. Byly stanoveny tloušťky těles pro které je tato změna významná. Presentované výsledky pomáhají k věrohodnému popisu 3d těles s obecnými koncentrátory napětí. The influence of the singularity induced by the free surface on the behaviour of a body with a V-notch is investigated in this paper. Attention is focused mainly on the change of the singularity and the stress state through the thickness of a three-dimensional specimen. Numerical finite-element analysis of the tension loaded specimens with a V-notch were performed. The displacements and the stresses from the analysis were used to estimate the power of singularities using a log-log regression analysis along the crack front. It was found that in the middle of the specimen singularity of the V-notch is dominant this can be found using analytic equations describing two-dimensional stress distribution around the sharp V-notch. The thickness of boundary layer (region influenced by corner singularity) depends only on the Poisson's ratio of the material. The presented results can be used for a more reliable estimation of the free-surface effect on singular concentrator behaviour.
dcterms:title
Influence of the sinngularity induced by the free surface on behaviour of thin body with a v-notch Influence of the sinngularity induced by the free surface on behaviour of thin body with a v-notch Vliv singularity způsobené volným povrchem na chování tenkých těles s v-vrubem
skos:prefLabel
Influence of the sinngularity induced by the free surface on behaviour of thin body with a v-notch Influence of the sinngularity induced by the free surface on behaviour of thin body with a v-notch Vliv singularity způsobené volným povrchem na chování tenkých těles s v-vrubem
skos:notation
RIV/68081723:_____/07:00094872!RIV08-AV0-68081723
n4:strany
1;8
n4:aktivita
n16:P n16:Z
n4:aktivity
P(GA101/05/0227), P(GD106/05/H008), Z(AV0Z20410507)
n4:dodaniDat
n5:2008
n4:domaciTvurceVysledku
n15:6154557 n15:3875636 n15:5744024
n4:druhVysledku
n10:D
n4:duvernostUdaju
n20:S
n4:entitaPredkladatele
n17:predkladatel
n4:idSjednocenehoVysledku
426466
n4:idVysledku
RIV/68081723:_____/07:00094872
n4:jazykVysledku
n8:eng
n4:klicovaSlova
Surface singularity
n4:klicoveSlovo
n18:Surface%20singularity
n4:kontrolniKodProRIV
[56A2BFB0D102]
n4:mistoKonaniAkce
Malenovice
n4:mistoVydani
Ostrava
n4:nazevZdroje
Applied Mechanics 2007
n4:obor
n6:JL
n4:pocetDomacichTvurcuVysledku
3
n4:pocetTvurcuVysledku
3
n4:projekt
n13:GA101%2F05%2F0227 n13:GD106%2F05%2FH008
n4:rokUplatneniVysledku
n5:2007
n4:tvurceVysledku
Hutař, Pavel Majer, Zdeněk Náhlík, Luboš
n4:typAkce
n11:EUR
n4:zahajeniAkce
2007-04-16+02:00
n4:zamer
n9:AV0Z20410507
s:numberOfPages
8
n14:hasPublisher
Vysoká škola báňská - Technická univerzita Ostrava
n21:isbn
978-80-248-1389-9