Plasticity-induced crack closure model for two collinear cracks in plates of arvitrary thickness

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dc.contributor.authorChang, D.
dc.contributor.authorKotooussov, A.
dc.contributor.conferenceAustralasian Congress on Applied Mechanics (7th : 2012 : Adelaide, S.A.)
dc.date.issued2012
dc.description.abstractFracture and fatigue assessment of structures weakened by multiple site damage, such as two or more interacting cracks, is currently a very challenging problem. The main objective of this paper is to develop a mathematical model and an approach to investigate fracture behavior of two through-the-thickness collinear cracks of equal length in a plate of arbitrary thickness under remote cycling loading. The developed mathematical model of the problem under consideration is based on the classical strip yield model and plasticity induced crack closure concept. The approach utilises the fundamental solution for an edge dislocation in a plate of finite thickness and the distributed dislocation technique to obtain an effective and accurate solution to the system of governing equations. The obtained results show a very good agreement with the previously published analytical solutions for limiting cases. In particular, the new results confirm that the crack closure behavior and the opening stress variation in the case of two collinear cracks are significantly dependent on the separation gap between two cracks as well as the plate thickness.
dc.description.statementofresponsibilityDonghoon Chang and Andrei Kotousov
dc.identifier.citationProceedings: the 7th Australasian Congress on Applied Mechanics (ACAM 7), 9-12 December 2012, Adelaide: pp.1130-1139
dc.identifier.isbn9781922107619
dc.identifier.orcidKotooussov, A. [0000-0001-9337-5095]
dc.identifier.urihttp://hdl.handle.net/2440/76730
dc.language.isoen
dc.publisherEngineers Australia
dc.publisher.placeCDROM / DVDROM
dc.rightsCopyright status unknown
dc.source.urihttp://search.informit.com.au/documentSummary;dn=130806014247440;res=IELENG
dc.subjectCollinear cracks
dc.subjectcrack interaction
dc.subjectdistributed dislocation technique
dc.subjectmultiple site damage
dc.subjectplastic collapse
dc.subjectplasticity-induced crack closure
dc.subjectplate thickness effect
dc.subjectstrip yield model
dc.titlePlasticity-induced crack closure model for two collinear cracks in plates of arvitrary thickness
dc.typeConference paper
pubs.publication-statusPublished

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