Please use this identifier to cite or link to this item:
Full metadata record
DC FieldValueLanguage
dc.contributor.authorŠkec, L-
dc.contributor.authorAlfano, G-
dc.contributor.authorJelenić, G-
dc.identifier.citationComposites Part B: Engineering, 2018, 167 pp. 250 - 262en_US
dc.description.abstractWe study a double-cantilever beam (DCB), in which either the crack-mouth opening displacement or the end rotations are prescribed, in the linear-elastic-fracture-mechanics (LEFM) limit of an infinitely stiff and brittle interface.Wepresentanovel,yetextremelysimple,derivationoftheclosed-formsolutionofthisproblemwhen thearmsaremodelledwithTimoshenkobeamtheory.Weremovetheassumptionthatthecrosssectionsofthe DCB arms are assumed not to rotate (i.e. that they are clamped) at the crack tip, which is made in so-called ‘simple beam theory’(SBT).Therefore, with our‘ enhanced simple beam theory’(ESBT),in front of the crack tip, cross section sareallowedtorotate,althoughthebeamaxisstaysundeformed.Thus,wecandeterminethecracktiprotationcausedbythedeformationofthebeaminfrontofthecracktipalsointheLEFMlimit.Asaresult, mostoftheinaccuraciesoftheSBTareeliminated,withouttheneedforacrack-length correction, use dinthe ‘corrected beam theory’(CBT).Inthisway,wecanderiveaveryaccuratedatareductionformulaforthecritical energy release rate, Gc, which does not require the measurement of the crack length, unlike CBT. In our numerical results we show that, compared to the most effective data reduction methods currently available (including CBT), our formula is either as accurate or more accurate for the case of brittle delamination of thick compositeplates,inwhichsheardeformabilitycanplayasignificantrole.en_US
dc.format.extent250 - 262-
dc.subjectMode I delaminationen_US
dc.subjectAnalytical solutionen_US
dc.subjectTimoshenko beam theoryen_US
dc.subjectLinear-elastic fracture mechanicen_US
dc.titleEnhanced simple beam theory for characterising mode-I fracture resistance via a double cantilever beam testen_US
dc.relation.isPartOfComposites Part B: Engineering-
Appears in Collections:Dept of Mechanical Aerospace and Civil Engineering Research Papers

Files in This Item:
File Description SizeFormat 
FullText.pdf3.5 MBAdobe PDFView/Open

Items in BURA are protected by copyright, with all rights reserved, unless otherwise indicated.