In this paper, a method to predict ductile fracture under low cyclic loading condition is proposed. Then it is compared with test results of surface cracked pipes which is conducted by Battelle Institute. A&F nonlinear kinematic hardening model is adopted to describe material behavior under cyclic loading condition and energy-based damage model is applied to simulate ductile crack growth. The energy-based damaged model is depending on multi-axial fracture strain energy. To apply this model, two parameters should be determined from tensile and C(T) test results under monotonic loading condition. One is multi-axial fracture strain energy Wf and the other is critical damage value ωc. From the determined damaged model, it is enable to simulate surface cracked pipe tests under low cyclic loading condition.
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ASME 2018 Pressure Vessels and Piping Conference
July 15–20, 2018
Prague, Czech Republic
Conference Sponsors:
- Pressure Vessels and Piping Division
ISBN:
978-0-7918-5167-8
PROCEEDINGS PAPER
Application of Energy-Based Damage Model to Simulate Ductile Fracture Under Cyclic Loading and Validation Against Piping System Test Data Available to Purchase
Gyo-Geun Youn,
Gyo-Geun Youn
Korea University, Seoul, South Korea
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Hyun-Suk Nam,
Hyun-Suk Nam
Korea University, Seoul, South Korea
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Hune-Tae Kim,
Hune-Tae Kim
Korea University, Seoul, South Korea
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Jong-Min Lee,
Jong-Min Lee
Korea University, Seoul, South Korea
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Yun-Jae Kim
Yun-Jae Kim
Korea University, Seoul, South Korea
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Gyo-Geun Youn
Korea University, Seoul, South Korea
Hyun-Suk Nam
Korea University, Seoul, South Korea
Hune-Tae Kim
Korea University, Seoul, South Korea
Jong-Min Lee
Korea University, Seoul, South Korea
Yun-Jae Kim
Korea University, Seoul, South Korea
Paper No:
PVP2018-84861, V06AT06A019; 8 pages
Published Online:
October 26, 2018
Citation
Youn, G, Nam, H, Kim, H, Lee, J, & Kim, Y. "Application of Energy-Based Damage Model to Simulate Ductile Fracture Under Cyclic Loading and Validation Against Piping System Test Data." Proceedings of the ASME 2018 Pressure Vessels and Piping Conference. Volume 6A: Materials and Fabrication. Prague, Czech Republic. July 15–20, 2018. V06AT06A019. ASME. https://doi.org/10.1115/PVP2018-84861
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