The present paper proposed the modified limit load solution related to code case N-513-4 which is currently actively researched. To apply to assessment method for an elbow in code case N-513-4, the crack should be postulated as the idealized circumferential through-wall crack (TWC). For this reason, it could be led to overestimate the results due to the assumption of real crack shape. Then, the many research which is related to an accurate solution for a straight pipe by considering realistic crack has been investigated. However, the accurate solution for the elbow with non-idealized TWC is still lacked. Therefore, based on three-dimensional finite element model, the effect of non-idealized circumferential TWC on plastic limit load was investigated under internal pressure. To do this, the finite element (FE) model and analysis procedure employed in the present numerical study were validated by comparing the present finite element analyses result with existing solutions for idealized TWC in the elbow. Then, the correction factor for calculating plastic limit load was newly proposed as a tabulated form by considering practical ranges of geometry.
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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:
978-0-7918-5168-5
PROCEEDINGS PAPER
A Study on the Effect of Non-Idealized Crack on a 90° Elbow by Using Finite Element Analysis
Jae-Hee Kim,
Jae-Hee Kim
Sungkyunkwan University, Suwon, South Korea
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Min-Kyu Kim,
Min-Kyu Kim
Sungkyunkwan University, Suwon, South Korea
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Ye-Rin Choi,
Ye-Rin Choi
Sungkyunkwan University, Suwon, South Korea
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Doo-Ho Cho,
Doo-Ho Cho
Korea Institute of Nuclear Safety, Daejeon, South Korea
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Moon Ki Kim,
Moon Ki Kim
Sungkyunkwan University, Suwon, South Korea
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Jae-Boong Choi
Jae-Boong Choi
Sungkyunkwan University, Suwon, South Korea
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Jae-Hee Kim
Sungkyunkwan University, Suwon, South Korea
Min-Kyu Kim
Sungkyunkwan University, Suwon, South Korea
Ye-Rin Choi
Sungkyunkwan University, Suwon, South Korea
Doo-Ho Cho
Korea Institute of Nuclear Safety, Daejeon, South Korea
Moon Ki Kim
Sungkyunkwan University, Suwon, South Korea
Jae-Boong Choi
Sungkyunkwan University, Suwon, South Korea
Paper No:
PVP2018-84758, V06BT06A007; 6 pages
Published Online:
October 26, 2018
Citation
Kim, J, Kim, M, Choi, Y, Cho, D, Kim, MK, & Choi, J. "A Study on the Effect of Non-Idealized Crack on a 90° Elbow by Using Finite Element Analysis." Proceedings of the ASME 2018 Pressure Vessels and Piping Conference. Volume 6B: Materials and Fabrication. Prague, Czech Republic. July 15–20, 2018. V06BT06A007. ASME. https://doi.org/10.1115/PVP2018-84758
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