The effect of low stress triaxialities and deformation paths on ductile fracture simulations of large shell structures

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dc.contributor Aalto-yliopisto fi
dc.contributor Aalto University en Körgesaar, Mihkel 2018-10-24T09:39:35Z 2018-10-24T09:39:35Z 2019-01-01
dc.identifier.citation Körgesaar , M 2019 , ' The effect of low stress triaxialities and deformation paths on ductile fracture simulations of large shell structures ' MARINE STRUCTURES , vol 63 . DOI: 10.1016/j.marstruc.2018.08.004 en
dc.identifier.issn 0951-8339
dc.identifier.other PURE UUID: 4d977eef-2c9e-4d99-a337-999b45128f9a
dc.identifier.other PURE ITEMURL:
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dc.description.abstract In accidental limit state analysis of ship structures and their components, the common assumption is that failure takes place in the plate field under multi-axial tension, thus most advancements in developing fracture criteria have focused on that region. In contrast, failure in low stress triaxialities is relatively unexplored territory in the context of large-scale crash analysis. The probability of this failure mode increases with the decreasing ductility that is characteristic of high and extra high strength steels. Therefore, ductile fracture simulations are performed with large thin-walled steel structures employing four different fracture criteria that differently account low stress triaxialities and deformation history. Criteria are compared as to their capabilities to reproduce and predict experimentally measured behaviour. Analyses demonstrate that failure under lower stress triaxialities affects the response significantly especially when complex deformation history is considered. Suggestions are made for the further enhancement of fracture criteria as well as experimental configurations employed for benchmarking failure criteria. © 2018 The Author en
dc.format.mimetype application/pdf
dc.language.iso en en
dc.relation.ispartofseries MARINE STRUCTURES en
dc.relation.ispartofseries Volume 63 en
dc.rights openAccess en
dc.subject.other Materials Science(all) en
dc.subject.other Ocean Engineering en
dc.subject.other Mechanical Engineering en
dc.subject.other 214 Mechanical engineering en
dc.title The effect of low stress triaxialities and deformation paths on ductile fracture simulations of large shell structures en
dc.type A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä fi
dc.description.version Peer reviewed en
dc.contributor.department Department of Mechanical Engineering
dc.subject.keyword Deformation path
dc.subject.keyword Ductile fracture
dc.subject.keyword Fracture modelling
dc.subject.keyword Shear fracture
dc.subject.keyword Ship collision
dc.subject.keyword FAILURE MODEL
dc.subject.keyword NUMERICAL-ANALYSIS
dc.subject.keyword DAMAGE
dc.subject.keyword PREDICTION
dc.subject.keyword NECKING
dc.subject.keyword CRASHWORTHINESS
dc.subject.keyword SHIP
dc.subject.keyword CRITERION
dc.subject.keyword STRAIN
dc.subject.keyword SURVIVABILITY
dc.subject.keyword Materials Science(all)
dc.subject.keyword Ocean Engineering
dc.subject.keyword Mechanical Engineering
dc.subject.keyword 214 Mechanical engineering
dc.identifier.urn URN:NBN:fi:aalto-201810245519
dc.identifier.doi 10.1016/j.marstruc.2018.08.004

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