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dc.creatorRakin, M.
dc.creatorCvijović, Zorica
dc.creatorGrabulov, Vencislav
dc.creatorPutić, Slaviša
dc.creatorSedmak, Aleksandar
dc.date.accessioned2021-03-10T10:12:18Z
dc.date.available2021-03-10T10:12:18Z
dc.date.issued2004
dc.identifier.issn0013-7944
dc.identifier.urihttp://TechnoRep.tmf.bg.ac.rs/handle/123456789/614
dc.description.abstractIn the paper ductile fracture initiation analysis of low-alloyed ferritic steel has been made by application of two micromechanical models: the Rice-Tracey void growth model and the Gurson-Tvergaard-Needleman (GTN) model. The aim of the study was to analyse transferability of micromechanical parameters determined on specimens without initial crack to pre-cracked specimens. A significant part of the research has been carried out through participation in the round robin project organised by the European Structural Integrity Society (ESIS). Tensile tests have been performed on cylindrical smooth specimens and CT specimens. Critical values of micromechanical parameters determined on smooth specimen for both applied models, have been used for prediction of the crack growth initiation in CT specimen. Modelling of the first phase of ductile fracture-void nucleation-has been carried out using quantitative metallographic analysis of non-metallic inclusion content in tested steel. For determination of critical values of model parameters corresponding to ductile fracture initiation a simple procedure has been applied based on a combination of experimental and numerical results. Evaluated J-integral values corresponding to onset of crack growth, J(i), are in good agreement with experimental result and both models have proved to be suitable for determination of the ductile fracture initiation in tested steel. The effect of FE size at a crack tip on J(i)-value has been particularly analysed: it has been established that the calculation with FE size corresponding to the mean free path), between inclusions in steel gives results that are in accordance with the experimental ones.en
dc.publisherPergamon-Elsevier Science Ltd, Oxford
dc.rightsrestrictedAccess
dc.sourceEngineering Fracture Mechanics
dc.subjectductile fracture initiationen
dc.subjectmicromechanical modellingen
dc.subjectvoid growth ratioen
dc.subjectvoid volume fractionen
dc.subjectnon-metallic inclusionsen
dc.subjectfinite element methoden
dc.titlePrediction of ductile fracture initiation using micromechanical analysisen
dc.typeconferenceObject
dc.rights.licenseARR
dc.citation.epage827
dc.citation.issue4-6
dc.citation.other71(4-6): 813-827
dc.citation.rankM21
dc.citation.spage813
dc.citation.volume71
dc.identifier.doi10.1016/S0013-7944(03)00013-4
dc.identifier.rcubconv_2359
dc.identifier.scopus2-s2.0-0344287082
dc.identifier.wos000188122500032
dc.type.versionpublishedVersion


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