Fatigue Strength Analysis of Ship’s Welded Structures Based on Method of Notch Stress
To address the fatigue strength problem of ship structures, the notch stress method is applied to typical structural joints focusing on weld toe and weld root. First, the basic principles of notch stress method and the notch fatigue analysis process of ship structure are introduced. Then, six typica...
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Editorial Office of Journal of Shanghai Jiao Tong University
2025-04-01
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| Series: | Shanghai Jiaotong Daxue xuebao |
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| Online Access: | https://xuebao.sjtu.edu.cn/article/2025/1006-2467/1006-2467-59-4-458.shtml |
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| author | ZHEN Chunbo, LIU Shihao, ZHANG Aifeng, XING Shizhu, ZHANG Runze |
| author_facet | ZHEN Chunbo, LIU Shihao, ZHANG Aifeng, XING Shizhu, ZHANG Runze |
| author_sort | ZHEN Chunbo, LIU Shihao, ZHANG Aifeng, XING Shizhu, ZHANG Runze |
| collection | DOAJ |
| description | To address the fatigue strength problem of ship structures, the notch stress method is applied to typical structural joints focusing on weld toe and weld root. First, the basic principles of notch stress method and the notch fatigue analysis process of ship structure are introduced. Then, six typical joint types are set up for the double bottom structure of a product oil tanker. The local notch stress analysis of the fatigue hot spot is conducted using the finite element sub-modeling technology, allowing the determination of the notch stress concentration factor at the weld toe and weld root. Finally, based on the harmonised common structural rules (HCSR), the fatigue load and load condition of the ship structure are calculated, and the fatigue analysis of six typical joint types is performed. The results show that under the same load conditions, the notch stress concentration factor at the weld toe of each hot spot is smaller than that at the weld root, and the joint type 3 has the lowest fatigue damage value among the joint types, which suggests this type can improve the fatigue resistance of the hull. |
| format | Article |
| id | doaj-art-cc2052262e45453f89fe4b812a7cb3fe |
| institution | OA Journals |
| issn | 1006-2467 |
| language | zho |
| publishDate | 2025-04-01 |
| publisher | Editorial Office of Journal of Shanghai Jiao Tong University |
| record_format | Article |
| series | Shanghai Jiaotong Daxue xuebao |
| spelling | doaj-art-cc2052262e45453f89fe4b812a7cb3fe2025-08-20T02:28:32ZzhoEditorial Office of Journal of Shanghai Jiao Tong UniversityShanghai Jiaotong Daxue xuebao1006-24672025-04-0159445846510.16183/j.cnki.jsjtu.2023.307Fatigue Strength Analysis of Ship’s Welded Structures Based on Method of Notch StressZHEN Chunbo, LIU Shihao, ZHANG Aifeng, XING Shizhu, ZHANG Runze01. Naval Architecture and Ocean Engineering College, Dalian Maritime University, Dalian 116026, Liaoning, China;2. Shanghai Aerospace Electronic Technology Institute, Shanghai 201109, ChinaTo address the fatigue strength problem of ship structures, the notch stress method is applied to typical structural joints focusing on weld toe and weld root. First, the basic principles of notch stress method and the notch fatigue analysis process of ship structure are introduced. Then, six typical joint types are set up for the double bottom structure of a product oil tanker. The local notch stress analysis of the fatigue hot spot is conducted using the finite element sub-modeling technology, allowing the determination of the notch stress concentration factor at the weld toe and weld root. Finally, based on the harmonised common structural rules (HCSR), the fatigue load and load condition of the ship structure are calculated, and the fatigue analysis of six typical joint types is performed. The results show that under the same load conditions, the notch stress concentration factor at the weld toe of each hot spot is smaller than that at the weld root, and the joint type 3 has the lowest fatigue damage value among the joint types, which suggests this type can improve the fatigue resistance of the hull.https://xuebao.sjtu.edu.cn/article/2025/1006-2467/1006-2467-59-4-458.shtmlship structurefatigue strengthnotch stresssub-model methodharmonised common structural rules (hcsr) |
| spellingShingle | ZHEN Chunbo, LIU Shihao, ZHANG Aifeng, XING Shizhu, ZHANG Runze Fatigue Strength Analysis of Ship’s Welded Structures Based on Method of Notch Stress Shanghai Jiaotong Daxue xuebao ship structure fatigue strength notch stress sub-model method harmonised common structural rules (hcsr) |
| title | Fatigue Strength Analysis of Ship’s Welded Structures Based on Method of Notch Stress |
| title_full | Fatigue Strength Analysis of Ship’s Welded Structures Based on Method of Notch Stress |
| title_fullStr | Fatigue Strength Analysis of Ship’s Welded Structures Based on Method of Notch Stress |
| title_full_unstemmed | Fatigue Strength Analysis of Ship’s Welded Structures Based on Method of Notch Stress |
| title_short | Fatigue Strength Analysis of Ship’s Welded Structures Based on Method of Notch Stress |
| title_sort | fatigue strength analysis of ship s welded structures based on method of notch stress |
| topic | ship structure fatigue strength notch stress sub-model method harmonised common structural rules (hcsr) |
| url | https://xuebao.sjtu.edu.cn/article/2025/1006-2467/1006-2467-59-4-458.shtml |
| work_keys_str_mv | AT zhenchunboliushihaozhangaifengxingshizhuzhangrunze fatiguestrengthanalysisofshipsweldedstructuresbasedonmethodofnotchstress |