A phenomenological model of ductile fracture for API X65 steel

A phenomenological model of ductile fracture for API X65 steel

This paper presents a phenomenological model of ductile fracture for the API X65 steel using the Gurson–Tvergaard–Needleman (GTN) model. Experimental tests and FE damage simulations using the GTN model are performed for smooth and notched tensile bars, from which the parameters in the GTN model are...

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Bibliographic Details
Published in:International journal of mechanical sciences Vol. 49; no. 12; pp. 1399 - 1412
Main Authors: Oh, Chang-Kyun, Kim, Yun-Jae, Baek, Jong-Hyun, Kim, Young-Pyo, Kim, Woosik
Format: Journal Article
Language:English
Published: Elsevier Ltd 01-12-2007
Subjects:
API X65
Ductile fracture
GTN model
Pre-strain
GTN model
Ductile fracture
API X65
Pre-strain
Online Access:Get full text
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Summary:This paper presents a phenomenological model of ductile fracture for the API X65 steel using the Gurson–Tvergaard–Needleman (GTN) model. Experimental tests and FE damage simulations using the GTN model are performed for smooth and notched tensile bars, from which the parameters in the GTN model are calibrated. Comparison of experimental data of pre-strained, notched tensile and fracture toughness tests with finite element (FE) damage analyses show good agreements, suggesting the validity of the calibrated parameters. As application, the developed GTN model is applied to predict the pre-strain effect on deformation and fracture and the results are compared with experimental data.
ISSN:0020-7403
1879-2162
DOI:10.1016/j.ijmecsci.2007.03.008