Plastic collapse load prediction of cracked circular hollow section T/Y-joints under in-plane and out-of-plane bending
The plastic collapse loads of cracked circular hollow section (CHS) T/Y-joints under in-plane and out-of-plane bending are investigated using finite element (FE) analyses. An in-house 3D FE mesh generator is specifically developed to create the mesh models of the cracked joints containing a semi-ell...
| Main Authors: | , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2019
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| Online Access: | https://hdl.handle.net/10356/90146 http://hdl.handle.net/10220/48430 |
| _version_ | 1811695759711535104 |
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| author | Li, Tao Lie, Seng-Tjhen Shao, Yong-Bo |
| author2 | School of Civil and Environmental Engineering |
| author_facet | School of Civil and Environmental Engineering Li, Tao Lie, Seng-Tjhen Shao, Yong-Bo |
| author_sort | Li, Tao |
| collection | NTU |
| description | The plastic collapse loads of cracked circular hollow section (CHS) T/Y-joints under in-plane and out-of-plane bending are investigated using finite element (FE) analyses. An in-house 3D FE mesh generator is specifically developed to create the mesh models of the cracked joints containing a semi-elliptical surface crack located at the weld toe of the chord. Mesh convergence tests are then carried out to check the accuracy of the generated mesh models. The in-plane and out-of-plane plastic collapse moments of uncracked CHS T/Y-joints are calculated and compared with results obtained from three codes and experimental data. The comparison shows that the plastic collapse moments of uncracked CHS T/Y-joints obtained in this study are accurate and reliable. Subsequently, an extensive parametric study is carried out to investigate the plastic collapse moments of cracked CHS T/Y-joints under in-plane and out-of-plane bending. It is found that the in-plane and out-of-plane plastic collapse moments may decrease by up to 35.1% and 33.6% respectively when the crack area Anc reaches 25% of the intersectional area, t0*lw. Finally, two lower bound strength reduction factor FAR equations for cracked CHS T/Y-joints under in-plane and out-of-plane bending are proposed. |
| first_indexed | 2024-10-01T07:28:35Z |
| format | Journal Article |
| id | ntu-10356/90146 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T07:28:35Z |
| publishDate | 2019 |
| record_format | dspace |
| spelling | ntu-10356/901462020-03-07T11:43:39Z Plastic collapse load prediction of cracked circular hollow section T/Y-joints under in-plane and out-of-plane bending Li, Tao Lie, Seng-Tjhen Shao, Yong-Bo School of Civil and Environmental Engineering Cracked CHS T/Y-joints In-plane Bending DRNTU::Engineering::Civil engineering The plastic collapse loads of cracked circular hollow section (CHS) T/Y-joints under in-plane and out-of-plane bending are investigated using finite element (FE) analyses. An in-house 3D FE mesh generator is specifically developed to create the mesh models of the cracked joints containing a semi-elliptical surface crack located at the weld toe of the chord. Mesh convergence tests are then carried out to check the accuracy of the generated mesh models. The in-plane and out-of-plane plastic collapse moments of uncracked CHS T/Y-joints are calculated and compared with results obtained from three codes and experimental data. The comparison shows that the plastic collapse moments of uncracked CHS T/Y-joints obtained in this study are accurate and reliable. Subsequently, an extensive parametric study is carried out to investigate the plastic collapse moments of cracked CHS T/Y-joints under in-plane and out-of-plane bending. It is found that the in-plane and out-of-plane plastic collapse moments may decrease by up to 35.1% and 33.6% respectively when the crack area Anc reaches 25% of the intersectional area, t0*lw. Finally, two lower bound strength reduction factor FAR equations for cracked CHS T/Y-joints under in-plane and out-of-plane bending are proposed. 2019-05-29T02:00:19Z 2019-12-06T17:41:47Z 2019-05-29T02:00:19Z 2019-12-06T17:41:47Z 2017 Journal Article Li, T., Lie, S.-T., & Shao, Y.-B. (2018). Plastic collapse load prediction of cracked circular hollow section T/Y-joints under in-plane and out-of-plane bending. Ocean Engineering, 148, 136-148. doi:10.1016/j.oceaneng.2017.11.033 0029-8018 https://hdl.handle.net/10356/90146 http://hdl.handle.net/10220/48430 10.1016/j.oceaneng.2017.11.033 en Ocean Engineering © 2017 Elsevier Ltd. All rights reserved. |
| spellingShingle | Cracked CHS T/Y-joints In-plane Bending DRNTU::Engineering::Civil engineering Li, Tao Lie, Seng-Tjhen Shao, Yong-Bo Plastic collapse load prediction of cracked circular hollow section T/Y-joints under in-plane and out-of-plane bending |
| title | Plastic collapse load prediction of cracked circular hollow section T/Y-joints under in-plane and out-of-plane bending |
| title_full | Plastic collapse load prediction of cracked circular hollow section T/Y-joints under in-plane and out-of-plane bending |
| title_fullStr | Plastic collapse load prediction of cracked circular hollow section T/Y-joints under in-plane and out-of-plane bending |
| title_full_unstemmed | Plastic collapse load prediction of cracked circular hollow section T/Y-joints under in-plane and out-of-plane bending |
| title_short | Plastic collapse load prediction of cracked circular hollow section T/Y-joints under in-plane and out-of-plane bending |
| title_sort | plastic collapse load prediction of cracked circular hollow section t y joints under in plane and out of plane bending |
| topic | Cracked CHS T/Y-joints In-plane Bending DRNTU::Engineering::Civil engineering |
| url | https://hdl.handle.net/10356/90146 http://hdl.handle.net/10220/48430 |
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