A fundamental study on structural strength assessment of U-bolts for expanded application to shipbuilding and offshore piping systems
The currently defined Safe Working Load (SWL) of the U-bolt has been determined excessively conservatively. To address this issue, this study conducted structural tests and numerical analysis on round type U-bolts of various sizes. The structural tests were conducted using a 2.5 MN actuator at the S...
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| Format: | Article |
| Language: | English |
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Elsevier
2024-01-01
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| Series: | International Journal of Naval Architecture and Ocean Engineering |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S209267822300050X |
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| author | Minsung Chun Jinyoung Kim Kangho Kim Daseul Jeong Deokyeon Lee Sungkuk Wi Byeonghwa Kim Cheonghak Kim Chun-Sik Shim |
| author_facet | Minsung Chun Jinyoung Kim Kangho Kim Daseul Jeong Deokyeon Lee Sungkuk Wi Byeonghwa Kim Cheonghak Kim Chun-Sik Shim |
| author_sort | Minsung Chun |
| collection | DOAJ |
| description | The currently defined Safe Working Load (SWL) of the U-bolt has been determined excessively conservatively. To address this issue, this study conducted structural tests and numerical analysis on round type U-bolts of various sizes. The structural tests were conducted using a 2.5 MN actuator at the SURF R&D center, and the strain was measured through a uniaxial strain gage. The test showed the failure load greatly exceeded the design load with horizontal force. This necessitates a reevaluation and redefinition of load standards. Nonlinear numerical analysis was carried out, and these results were compared with the structural test results. When subjected to vertical loading, behavior was similar to uniaxial tension. On the other hand, using linear elastic analysis for determining SWL for horizontal loading was found to be irrational. A methodology was proposed for estimating the SWL of the U-bolt. |
| format | Article |
| id | doaj-art-dd45525d33f04f31a705bf4e3ea21c00 |
| institution | OA Journals |
| issn | 2092-6782 |
| language | English |
| publishDate | 2024-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | International Journal of Naval Architecture and Ocean Engineering |
| spelling | doaj-art-dd45525d33f04f31a705bf4e3ea21c002025-08-20T02:00:09ZengElsevierInternational Journal of Naval Architecture and Ocean Engineering2092-67822024-01-011610056110.1016/j.ijnaoe.2023.100561A fundamental study on structural strength assessment of U-bolts for expanded application to shipbuilding and offshore piping systemsMinsung Chun0Jinyoung Kim1Kangho Kim2Daseul Jeong3Deokyeon Lee4Sungkuk Wi5Byeonghwa Kim6Cheonghak Kim7Chun-Sik Shim8Samsung Heavy Industries, Geoje-si, Gyeongsangnam-do, Republic of KoreaSamsung Heavy Industries, Geoje-si, Gyeongsangnam-do, Republic of KoreaDepartment of Naval Architecture and Ocean Engineering, Mokpo National University, Jeollanam-do, Republic of KoreaDepartment of Naval Architecture and Ocean Engineering, Mokpo National University, Jeollanam-do, Republic of KoreaDepartment of Naval Architecture and Ocean Engineering, Mokpo National University, Jeollanam-do, Republic of KoreaSubsea Umbilical Cable Riser Flowline (SURF) R&D Center, Mokpo National University, Jeollanam-do, Republic of KoreaMTESS Co., Ltd., Gyeongsangnam-do, Republic of KoreaMTESS Co., Ltd., Gyeongsangnam-do, Republic of KoreaDepartment of Naval Architecture and Ocean Engineering, Mokpo National University, Jeollanam-do, Republic of Korea; Corresponding author.The currently defined Safe Working Load (SWL) of the U-bolt has been determined excessively conservatively. To address this issue, this study conducted structural tests and numerical analysis on round type U-bolts of various sizes. The structural tests were conducted using a 2.5 MN actuator at the SURF R&D center, and the strain was measured through a uniaxial strain gage. The test showed the failure load greatly exceeded the design load with horizontal force. This necessitates a reevaluation and redefinition of load standards. Nonlinear numerical analysis was carried out, and these results were compared with the structural test results. When subjected to vertical loading, behavior was similar to uniaxial tension. On the other hand, using linear elastic analysis for determining SWL for horizontal loading was found to be irrational. A methodology was proposed for estimating the SWL of the U-bolt.http://www.sciencedirect.com/science/article/pii/S209267822300050XU-boltFinite Element Method (FEM)Full-scale structural testStructural strength assessment |
| spellingShingle | Minsung Chun Jinyoung Kim Kangho Kim Daseul Jeong Deokyeon Lee Sungkuk Wi Byeonghwa Kim Cheonghak Kim Chun-Sik Shim A fundamental study on structural strength assessment of U-bolts for expanded application to shipbuilding and offshore piping systems International Journal of Naval Architecture and Ocean Engineering U-bolt Finite Element Method (FEM) Full-scale structural test Structural strength assessment |
| title | A fundamental study on structural strength assessment of U-bolts for expanded application to shipbuilding and offshore piping systems |
| title_full | A fundamental study on structural strength assessment of U-bolts for expanded application to shipbuilding and offshore piping systems |
| title_fullStr | A fundamental study on structural strength assessment of U-bolts for expanded application to shipbuilding and offshore piping systems |
| title_full_unstemmed | A fundamental study on structural strength assessment of U-bolts for expanded application to shipbuilding and offshore piping systems |
| title_short | A fundamental study on structural strength assessment of U-bolts for expanded application to shipbuilding and offshore piping systems |
| title_sort | fundamental study on structural strength assessment of u bolts for expanded application to shipbuilding and offshore piping systems |
| topic | U-bolt Finite Element Method (FEM) Full-scale structural test Structural strength assessment |
| url | http://www.sciencedirect.com/science/article/pii/S209267822300050X |
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