Application of the GTN model to ductile crack growth simulation in through-wall cracked pipes

Young Ryun Oh; Hyun Suk Nam; Yun Jae Kim; Naoki Miura

doi:10.1016/j.ijpvp.2017.11.006

Application of the GTN model to ductile crack growth simulation in through-wall cracked pipes

Young Ryun Oh, Hyun Suk Nam, Yun Jae Kim, Naoki Miura

School of Mechanical Engineering

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

28 Citations (Scopus)

Abstract

This paper presents ductile fracture simulation using the GTN (Gurson-Tvergaard-Needleman) model of through-wall cracked STPT410 carbon steel pipe test under pure bending. Three issues related to practical application are addressed; (i) how to determine the parameters in the GTN model from fracture toughness data, (ii) how to incorporate the element-size effect to the GTN model and (iii) the effect of the crack-tip mesh design on determination of the GTN model parameters. It is found that determined values of the parameters depend on the crack-tip mesh design and the finite element size used in simulation. The split of the crack tip element into two makes parameter determination easier and gives better simulation results, but is difficult to apply to three-dimensional surface crack problems.

Original language	English
Pages (from-to)	35-44
Number of pages	10
Journal	International Journal of Pressure Vessels and Piping
Volume	159
DOIs	https://doi.org/10.1016/j.ijpvp.2017.11.006
Publication status	Published - 2018 Jan

Keywords

Ductile crack growth simulation
Finite element damage analysis
GTN model
Parameter calibration
Through-wall cracked pipe

ASJC Scopus subject areas

Materials Science(all)
Mechanics of Materials
Mechanical Engineering

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10.1016/j.ijpvp.2017.11.006

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title = "Application of the GTN model to ductile crack growth simulation in through-wall cracked pipes",

abstract = "This paper presents ductile fracture simulation using the GTN (Gurson-Tvergaard-Needleman) model of through-wall cracked STPT410 carbon steel pipe test under pure bending. Three issues related to practical application are addressed; (i) how to determine the parameters in the GTN model from fracture toughness data, (ii) how to incorporate the element-size effect to the GTN model and (iii) the effect of the crack-tip mesh design on determination of the GTN model parameters. It is found that determined values of the parameters depend on the crack-tip mesh design and the finite element size used in simulation. The split of the crack tip element into two makes parameter determination easier and gives better simulation results, but is difficult to apply to three-dimensional surface crack problems.",

keywords = "Ductile crack growth simulation, Finite element damage analysis, GTN model, Parameter calibration, Through-wall cracked pipe",

author = "Oh, {Young Ryun} and Nam, {Hyun Suk} and Kim, {Yun Jae} and Naoki Miura",

note = "Funding Information: This research was supported by National Research Foundation of Korea (NRF) funded by the Ministry of Science, ICT and Future Planning (NRF- 2017R1A2B2009759 ) and by the Nuclear Power Core Technology Development Program of the Korea Institute of Energy Technology Evaluation and Planning (KETEP) , the Ministry of Trade, Industry & Energy, Republic of Korea (No. 20141520100860 ). Publisher Copyright: {\textcopyright} 2017",

year = "2018",

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doi = "10.1016/j.ijpvp.2017.11.006",

language = "English",

volume = "159",

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AU - Oh, Young Ryun

AU - Nam, Hyun Suk

AU - Kim, Yun Jae

AU - Miura, Naoki

N1 - Funding Information: This research was supported by National Research Foundation of Korea (NRF) funded by the Ministry of Science, ICT and Future Planning (NRF- 2017R1A2B2009759 ) and by the Nuclear Power Core Technology Development Program of the Korea Institute of Energy Technology Evaluation and Planning (KETEP) , the Ministry of Trade, Industry & Energy, Republic of Korea (No. 20141520100860 ). Publisher Copyright: © 2017

PY - 2018/1

Y1 - 2018/1

N2 - This paper presents ductile fracture simulation using the GTN (Gurson-Tvergaard-Needleman) model of through-wall cracked STPT410 carbon steel pipe test under pure bending. Three issues related to practical application are addressed; (i) how to determine the parameters in the GTN model from fracture toughness data, (ii) how to incorporate the element-size effect to the GTN model and (iii) the effect of the crack-tip mesh design on determination of the GTN model parameters. It is found that determined values of the parameters depend on the crack-tip mesh design and the finite element size used in simulation. The split of the crack tip element into two makes parameter determination easier and gives better simulation results, but is difficult to apply to three-dimensional surface crack problems.

AB - This paper presents ductile fracture simulation using the GTN (Gurson-Tvergaard-Needleman) model of through-wall cracked STPT410 carbon steel pipe test under pure bending. Three issues related to practical application are addressed; (i) how to determine the parameters in the GTN model from fracture toughness data, (ii) how to incorporate the element-size effect to the GTN model and (iii) the effect of the crack-tip mesh design on determination of the GTN model parameters. It is found that determined values of the parameters depend on the crack-tip mesh design and the finite element size used in simulation. The split of the crack tip element into two makes parameter determination easier and gives better simulation results, but is difficult to apply to three-dimensional surface crack problems.

KW - Ductile crack growth simulation

KW - Finite element damage analysis

KW - GTN model

KW - Parameter calibration

KW - Through-wall cracked pipe

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U2 - 10.1016/j.ijpvp.2017.11.006

DO - 10.1016/j.ijpvp.2017.11.006

M3 - Article

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SN - 0308-0161

VL - 159

SP - 35

EP - 44

JO - International Journal of Pressure Vessels and Piping

JF - International Journal of Pressure Vessels and Piping

ER -

Application of the GTN model to ductile crack growth simulation in through-wall cracked pipes

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Keywords

ASJC Scopus subject areas

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