In this study, some benchmark problems on fracture tests for circumferentially through-wall/surface cracked pipes were provided. The participants predicted the ductile crack propagation behavior by their own approaches, including nucleation, growth, and coalescence of voids simulated by Gurson model, ductile crack propagation using stress modified fracture strain (SMFS) model, J-integral based ductile crack propagation using XFEM, CTOA based ductile crack propagation using FEM, stress triaxiality and plastic strain (STPS) based ductile crack propagation using FEM, and ductile crack propagation using peridynamics. Among them, GTN, CTOA and STPS models were not applied to surface crack problems. Discrepancies between the experimental maximum loads and calculated maximum loads were within 10% in most cases and 25% in the maximum case. Element size dependency of analysis parameters were considered in SMFS and GTN models while those were determined from independent material tests. Gurson model can predict slanting crack propagation directions. XFEM which did not need analysis fitting parameters cannot analyze beyond the peaks of load-LPD curves. Crack propagation directions were given and fixed in both CTOA and STPS models. Parameters in Gurson model and peridynamics were optimized to reproduce load-LPD curve in one of the benchmark problems.
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ASME 2017 Pressure Vessels and Piping Conference
July 16–20, 2017
Waikoloa, Hawaii, USA
Conference Sponsors:
- Pressure Vessels and Piping Division
ISBN:
978-0-7918-5799-1
PROCEEDINGS PAPER
Benchmark Analysis of Ductile Fracture Simulation for Circumferentially Cracked Pipes Subjected to Bending Available to Purchase
Naoki Miura,
Naoki Miura
Central Research Institute of Electric Power Industry, Yokosuka, Japan
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Tomohisa Kumagai,
Tomohisa Kumagai
Central Research Institute of Electric Power Industry, Yokosuka, Japan
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Masanori Kikuchi,
Masanori Kikuchi
Tokyo University of Science, Noda, Japan
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Akiyuki Takahashi,
Akiyuki Takahashi
Tokyo University of Science, Noda, Japan
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Toshio Nagashima,
Toshio Nagashima
Sophia University, Chiyoda-ku, Japan
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Yoshitaka Wada
Yoshitaka Wada
Kindai University, Higashiosaka, Japan
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Naoki Miura
Central Research Institute of Electric Power Industry, Yokosuka, Japan
Tomohisa Kumagai
Central Research Institute of Electric Power Industry, Yokosuka, Japan
Masanori Kikuchi
Tokyo University of Science, Noda, Japan
Akiyuki Takahashi
Tokyo University of Science, Noda, Japan
Yun-Jae Kim
Korea University, Seoul, Korea
Toshio Nagashima
Sophia University, Chiyoda-ku, Japan
Yoshitaka Wada
Kindai University, Higashiosaka, Japan
Paper No:
PVP2017-65548, V06AT06A002; 10 pages
Published Online:
October 26, 2017
Citation
Miura, N, Kumagai, T, Kikuchi, M, Takahashi, A, Kim, Y, Nagashima, T, & Wada, Y. "Benchmark Analysis of Ductile Fracture Simulation for Circumferentially Cracked Pipes Subjected to Bending." Proceedings of the ASME 2017 Pressure Vessels and Piping Conference. Volume 6A: Materials and Fabrication. Waikoloa, Hawaii, USA. July 16–20, 2017. V06AT06A002. ASME. https://doi.org/10.1115/PVP2017-65548
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