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Statements

Subject Item
n2:RIV%2F68081723%3A_____%2F08%3A00317569%21RIV09-AV0-68081723
rdf:type
n7:Vysledek skos:Concept
dcterms:description
An influence of the test specimen’s preparation – shape and width of a stress concentrator – on the values of parameters of nonlinear fracture models of quasi-brittle cement-based composites is analyses in the paper presented. The parameters – e.g. effective crack extension, effective fracture toughness, and specific fracture energy – can be calculated from results of loading tests performed on notched three point bend specimens. The effects are investigated by means of a comparison of numerically simulated fracture process in the cracked specimen with the specimens with the double V-notch. The numerical simulations of the fracture according to the linear elastic fracture mechanics were performed by using finite element method programs (ANSYS, and FRANC2D). The influence on the load-carrying capacity and the initial compliance of the cracked specimen are introduced and discussed. An influence of the test specimen’s preparation – shape and width of a stress concentrator – on the values of parameters of nonlinear fracture models of quasi-brittle cement-based composites is analyses in the paper presented. The parameters – e.g. effective crack extension, effective fracture toughness, and specific fracture energy – can be calculated from results of loading tests performed on notched three point bend specimens. The effects are investigated by means of a comparison of numerically simulated fracture process in the cracked specimen with the specimens with the double V-notch. The numerical simulations of the fracture according to the linear elastic fracture mechanics were performed by using finite element method programs (ANSYS, and FRANC2D). The influence on the load-carrying capacity and the initial compliance of the cracked specimen are introduced and discussed. V příspěvku je analyzován Vliv tvaru a hlouby zářezu ve zkušebních tělesech kvazi- křehkých cementového kompozitu na hodnoty nelineární lomových parametrů. Parametry jako efektivní prodloužení trhliny, efektivní lomová houževnatost specifická lomová energie lze získat ze zatěžovacího diagramu pro tříbodový ohyb. Efekt je studován použitím konečnoprvkové analýzy lomového procesu na tělese pro tříbodový ohyb se zářezem ve tvaru dvou pravoúhlých vrubů. Vliv na zatěžovací kapacitu a na počáteční iniciaci trhliny je představen a diskutová
dcterms:title
Vliv šířky zářezu na lomovou odezvu ohýbaných betonových vzorků Influence of notch width on fracture response of bended concrete specimens Influence of notch width on fracture response of bended concrete specimens
skos:prefLabel
Influence of notch width on fracture response of bended concrete specimens Vliv šířky zářezu na lomovou odezvu ohýbaných betonových vzorků Influence of notch width on fracture response of bended concrete specimens
skos:notation
RIV/68081723:_____/08:00317569!RIV09-AV0-68081723
n3:aktivita
n12:Z n12:P
n3:aktivity
P(GA103/08/0963), Z(AV0Z20410507)
n3:dodaniDat
n8:2009
n3:domaciTvurceVysledku
n14:5640423 n14:9766553
n3:druhVysledku
n20:D
n3:duvernostUdaju
n11:S
n3:entitaPredkladatele
n16:predkladatel
n3:idSjednocenehoVysledku
372196
n3:idVysledku
RIV/68081723:_____/08:00317569
n3:jazykVysledku
n21:eng
n3:klicovaSlova
Notch geometry; 3PB specimens; fracture parameters; cement-based composites
n3:klicoveSlovo
n13:cement-based%20composites n13:Notch%20geometry n13:3PB%20specimens n13:fracture%20parameters
n3:kontrolniKodProRIV
[A5DB0C7B03A6]
n3:mistoKonaniAkce
Svratka
n3:mistoVydani
Prague
n3:nazevZdroje
Engineering Mechanics 2008
n3:obor
n4:JL
n3:pocetDomacichTvurcuVysledku
2
n3:pocetTvurcuVysledku
4
n3:projekt
n9:GA103%2F08%2F0963
n3:rokUplatneniVysledku
n8:2008
n3:tvurceVysledku
Seitl, Stanislav Keršner, Z. Veselý, V. Klusák, Jan
n3:typAkce
n19:EUR
n3:zahajeniAkce
2008-05-12+02:00
n3:zamer
n10:AV0Z20410507
s:numberOfPages
8
n17:hasPublisher
Ústav termomechaniky AV ČR
n18:isbn
978-80-87012-11-6