Investigation of Fatigue Assessment Method for Glass Fiber Reinforced Composite Hull Structures Based on Stiffness Degradation
A study was conducted on the fatigue assessment method for composite ship structures under complex marine environments, and a fatigue assessment method based on the principle of stiffness degradation was proposed. Fatigue tests were performed on the composite material of the target ship to obtain th...
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| Format: | Article |
| Language: | English |
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MDPI AG
2024-12-01
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| Series: | Journal of Marine Science and Engineering |
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| Online Access: | https://www.mdpi.com/2077-1312/12/12/2324 |
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| author | Kaiyan Li Guanyi Gao Guoqing Feng Yaozhong Fan Yiyang Han |
| author_facet | Kaiyan Li Guanyi Gao Guoqing Feng Yaozhong Fan Yiyang Han |
| author_sort | Kaiyan Li |
| collection | DOAJ |
| description | A study was conducted on the fatigue assessment method for composite ship structures under complex marine environments, and a fatigue assessment method based on the principle of stiffness degradation was proposed. Fatigue tests were performed on the composite material of the target ship to obtain the stiffness degradation parameters under tension–compression loading. Four fatigue hotspot areas in the midsection of the hull were selected, and mesh refinement was applied to these locations to accurately capture the variations in stress gradients. The structural stress response transfer function was calculated, and the short-term and long-term distribution data of wave loads were obtained. Finally, the fatigue life of the target ship hotspots was predicted by combining spectral fatigue analysis with the stiffness degradation theory. The results indicate that the connection between the bulkhead stiffener and the inner bottom plate has the shortest fatigue life, and its dimensions were optimized. |
| format | Article |
| id | doaj-art-c8cb99d5960442b2a275b1f35b9f6270 |
| institution | OA Journals |
| issn | 2077-1312 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Journal of Marine Science and Engineering |
| spelling | doaj-art-c8cb99d5960442b2a275b1f35b9f62702025-08-20T02:00:23ZengMDPI AGJournal of Marine Science and Engineering2077-13122024-12-011212232410.3390/jmse12122324Investigation of Fatigue Assessment Method for Glass Fiber Reinforced Composite Hull Structures Based on Stiffness DegradationKaiyan Li0Guanyi Gao1Guoqing Feng2Yaozhong Fan3Yiyang Han4College of Shipbuilding Engineering, Harbin Engineering University, Harbin 150001, ChinaYantai Research Institute, Harbin Engineering University, Yantai 264000, ChinaCollege of Shipbuilding Engineering, Harbin Engineering University, Harbin 150001, ChinaYantai Research Institute, Harbin Engineering University, Yantai 264000, ChinaCollege of Shipbuilding Engineering, Harbin Engineering University, Harbin 150001, ChinaA study was conducted on the fatigue assessment method for composite ship structures under complex marine environments, and a fatigue assessment method based on the principle of stiffness degradation was proposed. Fatigue tests were performed on the composite material of the target ship to obtain the stiffness degradation parameters under tension–compression loading. Four fatigue hotspot areas in the midsection of the hull were selected, and mesh refinement was applied to these locations to accurately capture the variations in stress gradients. The structural stress response transfer function was calculated, and the short-term and long-term distribution data of wave loads were obtained. Finally, the fatigue life of the target ship hotspots was predicted by combining spectral fatigue analysis with the stiffness degradation theory. The results indicate that the connection between the bulkhead stiffener and the inner bottom plate has the shortest fatigue life, and its dimensions were optimized.https://www.mdpi.com/2077-1312/12/12/2324composite shipstiffness degradationfatigue testfatigue life prediction |
| spellingShingle | Kaiyan Li Guanyi Gao Guoqing Feng Yaozhong Fan Yiyang Han Investigation of Fatigue Assessment Method for Glass Fiber Reinforced Composite Hull Structures Based on Stiffness Degradation Journal of Marine Science and Engineering composite ship stiffness degradation fatigue test fatigue life prediction |
| title | Investigation of Fatigue Assessment Method for Glass Fiber Reinforced Composite Hull Structures Based on Stiffness Degradation |
| title_full | Investigation of Fatigue Assessment Method for Glass Fiber Reinforced Composite Hull Structures Based on Stiffness Degradation |
| title_fullStr | Investigation of Fatigue Assessment Method for Glass Fiber Reinforced Composite Hull Structures Based on Stiffness Degradation |
| title_full_unstemmed | Investigation of Fatigue Assessment Method for Glass Fiber Reinforced Composite Hull Structures Based on Stiffness Degradation |
| title_short | Investigation of Fatigue Assessment Method for Glass Fiber Reinforced Composite Hull Structures Based on Stiffness Degradation |
| title_sort | investigation of fatigue assessment method for glass fiber reinforced composite hull structures based on stiffness degradation |
| topic | composite ship stiffness degradation fatigue test fatigue life prediction |
| url | https://www.mdpi.com/2077-1312/12/12/2324 |
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