Calibration Procedures for a Computational Model of Ductile Fracture

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Calibration Procedures for a Computational Model of Ductile Fracture

Show simple item record Xue, Z Pontin, M. G. Zok, F. W. Hutchinson, John W. 2010-06-10T20:25:26Z 2010
dc.identifier.citation Xue, Z., M. G. Pontin, F. W. Zok, and John W. Hutchinson. 2010. Calibration procedures for a computational model of ductile fracture. Engineering Fracture Mechanics 77(3): 492-509. en_US
dc.identifier.issn 0013-7944 en_US
dc.description.abstract A recent extension of the Gurson constitutive model of damage and failure of ductile structural alloys accounts for localization and crack formation under shearing as well as tension. When properly calibrated against a basic set of experiments, this model has the potential to predict the emergence and propagation of cracks over a wide range of stress states. This paper addresses procedures for calibrating the damage parameters of the extended constitutive model. The procedures are demonstrated for DH36 steel using data from three tests: (i) tension of a round bar, (ii) mode I cracking in a compact tension specimen, and (iii) shear localization and mode II cracking in a shear-off specimen. The computational model is then used to study the emergence of the cup-cone fracture mode in the neck of a round tensile bar. Ductility of a notched round bar provides additional validation. en_US
dc.description.sponsorship Engineering and Applied Sciences en_US
dc.language.iso en_US en_US
dc.publisher Elsevier en_US
dc.relation.isversionof doi:10.1016/j.engfracmech.2009.10.007 en_US
dash.license OAP
dc.subject ductile fracture en_US
dc.subject computational fracture en_US
dc.subject shear fracture en_US
dc.subject damage parameters en_US
dc.title Calibration Procedures for a Computational Model of Ductile Fracture en_US
dc.type Journal Article en_US
dc.description.version Accepted Manuscript en_US
dc.relation.journal Engineering Fracture Mechanics en_US Hutchinson, John W. 2010-06-10T20:25:26Z

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