A phenomenological model of ductile fracture for API X65 steel

Chang Kyun Oh; Yun Jae Kim; Jong Hyun Baek; Young Pyo Kim; Woosik Kim

doi:10.1016/j.ijmecsci.2007.03.008

A phenomenological model of ductile fracture for API X65 steel

Chang Kyun Oh, Yun Jae Kim, Jong Hyun Baek, Young Pyo Kim, Woosik Kim

Research output: Contribution to journal › Article › peer-review

102 Citations (Scopus)

Abstract

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.

Original language	English
Pages (from-to)	1399-1412
Number of pages	14
Journal	International Journal of Mechanical Sciences
Volume	49
Issue number	12
DOIs	https://doi.org/10.1016/j.ijmecsci.2007.03.008
Publication status	Published - 2007 Dec 1
Externally published	Yes

Keywords

API X65
Ductile fracture
GTN model
Pre-strain

ASJC Scopus subject areas

Civil and Structural Engineering
Materials Science(all)
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

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10.1016/j.ijmecsci.2007.03.008

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title = "A phenomenological model of ductile fracture for API X65 steel",

abstract = "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.",

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T1 - A phenomenological model of ductile fracture for API X65 steel

AU - Oh, Chang Kyun

AU - Kim, Yun Jae

AU - Baek, Jong Hyun

AU - Kim, Young Pyo

AU - Kim, Woosik

PY - 2007/12/1

Y1 - 2007/12/1

N2 - 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.

AB - 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.

KW - API X65

KW - Ductile fracture

KW - GTN model

KW - Pre-strain

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A phenomenological model of ductile fracture for API X65 steel

Abstract

Keywords

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