About: Numerical investigations of corner singularities in cracked bodies

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	The influence of corner singularity on the distribution of the stresses around the crack front for a three-dimensional structure is described in this paper. The distribution of stress singularity through the thickness of the middle tension specimen provides us an indication of crack behaviour close to a free surface. An estimation of the region where the change of singularity exponent plays an important role in fatigue crack propagation rate was carried out. A decrease in fatigue crack propagation rate close to the free surface was found. The lower fatigue crack propagation rate in the boundary layer in comparison with the interior of the specimen leads to a change of intersecting angle between crack and free surface and depends on Poisson’s ratio. The influence of corner singularity on the distribution of the stresses around the crack front for a three-dimensional structure is described in this paper. The distribution of stress singularity through the thickness of the middle tension specimen provides us an indication of crack behaviour close to a free surface. An estimation of the region where the change of singularity exponent plays an important role in fatigue crack propagation rate was carried out. A decrease in fatigue crack propagation rate close to the free surface was found. The lower fatigue crack propagation rate in the boundary layer in comparison with the interior of the specimen leads to a change of intersecting angle between crack and free surface and depends on Poisson’s ratio. (en) V článku je popsán vliv rohové singularity na rozložení napětí v okolí vrcholu trhliny pro třídimenzionální konstrukci.Je sledováno rozložení rohové singularity po tloušťce vzorku. Byl proveden odhad oblasti, ve které dochází k významné změně exponentu singularity. Vlivem změny singularity po tloušťce dochází u volného povrchu k poklesu rychlosti šíření únavové trhliny. (cs)
Title	Numerical investigations of corner singularities in cracked bodies Numerical investigations of corner singularities in cracked bodies (en) Numerické stanovení rohové singularity v tělese s trhlinou (cs)
skos:prefLabel	Numerical investigations of corner singularities in cracked bodies Numerical investigations of corner singularities in cracked bodies (en) Numerické stanovení rohové singularity v tělese s trhlinou (cs)
skos:notation	RIV/68081723:_____/07:00092920!RIV08-AV0-68081723
http://linked.open.../vavai/riv/strany	377;380
http://linked.open...avai/riv/aktivita	P Z
http://linked.open...avai/riv/aktivity	P(GP106/06/P239), Z(AV0Z20410507)
http://linked.open...iv/cisloPeriodika	-
http://linked.open...vai/riv/dodaniDat	2008
http://linked.open...aciTvurceVysledku	Knésl, Zdeněk Náhlík, Luboš Hutař, Pavel
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Ústav fyziky materiálů AV ČR, v. v. i.
http://linked.open...dnocenehoVysledku	438085
http://linked.open...ai/riv/idVysledku	RIV/68081723:_____/07:00092920
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	corner singularity; free surface; general singular stress concentrator; fatigue crack (en)
http://linked.open.../riv/klicoveSlovo	fatigue crack general singular stress concentrator free surface corner singularity
http://linked.open...odStatuVydavatele	CH - Švýcarská konfederace
http://linked.open...ontrolniKodProRIV	[91A6E937369D]
http://linked.open...i/riv/nazevZdroje	Key Engineering Materials
http://linked.open...in/vavai/riv/obor	JL
http://linked.open...ichTvurcuVysledku	3 (xsd:int)
http://linked.open...cetTvurcuVysledku	3 (xsd:int)
http://linked.open...vavai/riv/projekt	The effect of free surface on fatigue crack growth
http://linked.open...UplatneniVysledku	2007
http://linked.open...v/svazekPeriodika	348-349
http://linked.open...iv/tvurceVysledku	Hutař, Pavel Knésl, Zdeněk Náhlík, Luboš
http://linked.open...n/vavai/riv/zamer	Physical properties of advanced materials in relation to their microstructure and processing
issn	1013-9826
number of pages	4 (xsd:int)

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