The influence of stress triaxiality was a matter of concern on ductile fracture to explain geometry dependent fracture resistance characteristics of specimens and real structures during past two decades. Regarding the issue, recently, interests for local approach and micro-mechanical damage models are increased again in accordance with progress of computational environments. In this paper, the applicability of a local approach is investigated through a series of finite element (FE) analyses incorporating both a modified GTN model and a Rousselier model as well as fracture toughness tests. The ductile crack growth behaviour of SA515 Gr.60 carbon steel is assessed to guarantee transferability of fracture resistance curve from typical specimens with different in-plane and out-of-plane sizes. The material parameters are determined by calibration of test results and corresponding numerical analyses results, and used to simulate the fracture behaviour of CT specimens. Then, a comparison is drawn between the numerically estimated crack resistance curves and experimentally determined ones. Finally, the Rousselier model is applied to estimate J-R curves of circumferential through-wall cracked pipe. The comparison results showed that the two damage models can be used as promising solutions for ductile crack growth simulation.
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ASME 2006 Pressure Vessels and Piping/ICPVT-11 Conference
July 23–27, 2006
Vancouver, BC, Canada
Conference Sponsors:
- Pressure Vessels and Piping Division
ISBN:
0-7918-4756-X
PROCEEDINGS PAPER
Assessment of Ductile Crack Growth Based on a Local Approach Available to Purchase
Tae-Rin Lee,
Tae-Rin Lee
Sungkyunkwan University, Suwon, Kyonggi-do, Korea
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Yoon-Suk Chang,
Yoon-Suk Chang
Sungkyunkwan University, Suwon, Kyonggi-do, Korea
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Jae-Boong Choi,
Jae-Boong Choi
Sungkyunkwan University, Suwon, Kyonggi-do, Korea
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Young-Jin Kim
Young-Jin Kim
Sungkyunkwan University, Suwon, Kyonggi-do, Korea
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Tae-Rin Lee
Sungkyunkwan University, Suwon, Kyonggi-do, Korea
Yoon-Suk Chang
Sungkyunkwan University, Suwon, Kyonggi-do, Korea
Jae-Boong Choi
Sungkyunkwan University, Suwon, Kyonggi-do, Korea
Young-Jin Kim
Sungkyunkwan University, Suwon, Kyonggi-do, Korea
Paper No:
PVP2006-ICPVT-11-93439, pp. 369-373; 5 pages
Published Online:
July 23, 2008
Citation
Lee, T, Chang, Y, Choi, J, & Kim, Y. "Assessment of Ductile Crack Growth Based on a Local Approach." Proceedings of the ASME 2006 Pressure Vessels and Piping/ICPVT-11 Conference. Volume 5: High Pressure Technology, Nondestructive Evaluation, Pipeline Systems, Student Paper Competition. Vancouver, BC, Canada. July 23–27, 2006. pp. 369-373. ASME. https://doi.org/10.1115/PVP2006-ICPVT-11-93439
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