About: Calculation of the critical stress in two-phase materials

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An Entity of Type : http://linked.opendata.cz/ontology/domain/vavai/Vysledek, within Data Space : linked.opendata.cz associated with source document(s)

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	One of the primary reasons for the observed deviation of the behaviour of concrete from predictions based on linear elastic fracture mechanics can be the interaction between a crack and a material inhomogeneity such as a particle which necessarily exists in such a material. In this paper, concrete is modelled as a two-phase material and the behaviour of a crack with its tip on the interface between two different materials is studied. In contrast to cracks in homogeneous materials the stress singularity for a crack terminating at the interface is of the type r exp -lambda, where the value of the stress singularity exponent, lambda, is in the interval 0 < lambda < 1. This means that classical fracture mechanics theory and criterion cannot be applied. In the paper a new stability criterion is formulated. Conditions for the stability of the crack terminating at the interface between two materials are then used to estimate the critical stress for the intersection of coarse aggregate particles. It is shown One of the primary reasons for the observed deviation of the behaviour of concrete from predictions based on linear elastic fracture mechanics can be the interaction between a crack and a material inhomogeneity such as a particle which necessarily exists in such a material. In this paper, concrete is modelled as a two-phase material and the behaviour of a crack with its tip on the interface between two different materials is studied. In contrast to cracks in homogeneous materials the stress singularity for a crack terminating at the interface is of the type r exp -lambda, where the value of the stress singularity exponent, lambda, is in the interval 0 < lambda < 1. This means that classical fracture mechanics theory and criterion cannot be applied. In the paper a new stability criterion is formulated. Conditions for the stability of the crack terminating at the interface between two materials are then used to estimate the critical stress for the intersection of coarse aggregate particles. It is shown (en)
Title	Calculation of the critical stress in two-phase materials Calculation of the critical stress in two-phase materials (en)
skos:prefLabel	Calculation of the critical stress in two-phase materials Calculation of the critical stress in two-phase materials (en)
skos:notation	RIV/00216305:26110/01:PU23225!RIV/2003/GA0/261103/N
http://linked.open.../vavai/riv/strany	737-744
http://linked.open...avai/riv/aktivita	P Z
http://linked.open...avai/riv/aktivity	P(GV103/97/K003), P(KSK1076602), Z(AV0Z2041904)
http://linked.open...vai/riv/dodaniDat	2003
http://linked.open...aciTvurceVysledku	Náhlík, Luboš Keršner, Zbyněk
http://linked.open.../riv/druhVysledku	D - Článek ve sborníku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Vysoké učení technické v Brně / Fakulta stavební
http://linked.open...dnocenehoVysledku	674839
http://linked.open...ai/riv/idVysledku	RIV/00216305:26110/01:PU23225
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	aggregate, cement paste, concrete, critical stress, elastic mismatch, finite element method, fracture mechanics, mortar, two-phase material (en)
http://linked.open.../riv/klicoveSlovo	mortar aggregate cement paste concrete finite element method fracture mechanics critical stress elastic mismatch two-phase material
http://linked.open...ontrolniKodProRIV	[0315B1541937]
http://linked.open...v/mistoKonaniAkce	Cape Town
http://linked.open...i/riv/mistoVydani	Amsterdam
http://linked.open...i/riv/nazevZdroje	Structural Engineering, Mechanics and Computation
http://linked.open...in/vavai/riv/obor	JN
http://linked.open...ichTvurcuVysledku	2 (xsd:int)
http://linked.open...cetTvurcuVysledku	3 (xsd:int)
http://linked.open...ocetUcastnikuAkce	0 (xsd:int)
http://linked.open...nichUcastnikuAkce	0 (xsd:int)
http://linked.open...vavai/riv/projekt	Mechanics of bodies, fluids and media Material models for concrete for the assessment of severe accidents in NPPs
http://linked.open...UplatneniVysledku	2001
http://linked.open...iv/tvurceVysledku	Keršner, Zbyněk Knésl, Zdeněk Náhlík, Luboš
http://linked.open...vavai/riv/typAkce	WRD - Světová
http://linked.open.../riv/zahajeniAkce	2001-04-02 (xsd:date)
http://linked.open...n/vavai/riv/zamer	Behavior and properties of metallic and non-metallic materials in relation to their structure, research on processes leading to degradation of material quality
number of pages	8 (xsd:int)
http://purl.org/ne...btex#hasPublisher	ELSEVIER SCIENCE Ltd.
https://schema.org/isbn	0-08-043948-9
http://localhost/t...ganizacniJednotka	26110

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