Please use this identifier to cite or link to this item: https://scholarbank.nus.edu.sg/handle/10635/75114
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dc.titleCrack driving force and ultimate strength of thick-walled CHS X-joints with near-toe cracks
dc.contributor.authorWang, X.
dc.contributor.authorWu, J.-F.
dc.contributor.authorQian, X.
dc.date.accessioned2014-06-19T09:18:08Z
dc.date.available2014-06-19T09:18:08Z
dc.date.issued2011
dc.identifier.citationWang, X.,Wu, J.-F.,Qian, X. (2011). Crack driving force and ultimate strength of thick-walled CHS X-joints with near-toe cracks. Proceedings of the International Offshore and Polar Engineering Conference : 39-44. ScholarBank@NUS Repository.
dc.identifier.isbn9781880653968
dc.identifier.issn10986189
dc.identifier.urihttp://scholarbank.nus.edu.sg/handle/10635/75114
dc.description.abstractThis paper presents numerical studies on the static strength of the HSS (high strength steel) thick-walled CHS X-joints with near-toe surface cracks under the brace axial tensile load. The analyses cover a comprehensive array of joint geometric parameters and crack configurations. The 3-D FE models couple a global, topologically continuous mesh and a separate, local crack-front model through mesh-tieing. The plastic collapse loads as well as the crack driving forces (measured by the J-values) have been computed to assess the two competing failure mechanisms: the plastic collapse failure and the fracture failure. The predicted strength reduction data with respect to the crack area are compared with the equation in existing design codes. The design equation proves to be conservative especially for the high ß joints. The effects of fracture failure on the cracked joint strength are also investigated. Copyright © 2011 by the International Society of Offshore and Polar Engineers (ISOPE).
dc.sourceScopus
dc.subject3-D finite element analysis
dc.subjectCircular hollow section (CHS)
dc.subjectCrack driving force
dc.subjectJ-integral
dc.subjectThick-walled
dc.subjectUltimate strength
dc.subjectWeld toe crack
dc.typeConference Paper
dc.contributor.departmentCIVIL & ENVIRONMENTAL ENGINEERING
dc.description.sourcetitleProceedings of the International Offshore and Polar Engineering Conference
dc.description.page39-44
dc.description.codenPOPEE
dc.identifier.isiutNOT_IN_WOS
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