Study on the Dynamic Hull Girder Ultimate Strength and Structural Reliability of Large Container Ships Considering Uncertinities
| Project/Area Number |
15K06627
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Naval and maritime engineering
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| Research Institution | National Institute of Maritime, Port and Aviation Technology |
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Principal Investigator |
Yamada Yasuhira 国立研究開発法人海上・港湾・航空技術研究所, その他部局等, 研究員 (90443241)
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| Co-Investigator(Kenkyū-buntansha) |
田中 義照 国立研究開発法人海上・港湾・航空技術研究所, その他部局等, 研究員 (40373419)
小沢 匠 国立研究開発法人海上・港湾・航空技術研究所, その他部局等, 研究員 (80711332)
岡 正義 国立研究開発法人海上・港湾・航空技術研究所, その他部局等, 研究員 (70450674)
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| Co-Investigator(Renkei-kenkyūsha) |
KAWAMURA Yasumi 横浜国立大学, 大学院工学研究院, 教授 (50262407)
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| Research Collaborator |
KAMEYA Kyoko 法政大学, 職員
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| Project Period (FY) |
2015-04-01 – 2018-03-31
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| Project Status |
Completed (Fiscal Year 2017)
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| Budget Amount *help |
¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2017: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2016: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2015: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
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| Keywords | 船体最終強度 / 動的応答 / スラミング / コンテナ船 / 非線形FEA / 荷重周期 / Smith法 / 縦曲げモーメント / 動的最終強度 / 陽解法 / 動的応答倍率 / 船体固有周期 / 最終強度 / 共振 / whipping / slamming / 構造信頼性 / 動的影響 / 模型実験 / 不確定性 |
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| Outline of Final Research Achievements |
A series of 3-dimentional non-linear finite element simulation is carried out using a full model ship in order to investigate dynamic structural response of container ships.
①Dynamic collapse mechanism and structural response of container ships due to longitudinal bending moment are investigated in detail.②Effects of load duration , amplitude and analysis models on dynamic structural response of ultimate strength is investigated.③It is found by the analysis that, 1 transverse model gives un-conservative results, and that a full model and/or 1/2 hold model gives fairly reasonable results. ④Accuracies of 3 analysis methods(non-linear FEA, simplified method, closed formula) are compared, and a new closed formula for container ships is developed and its effectiveness is verified. ⑤Validation analysis for model test is carried out and effects of friction as well as in-plane stress-concentration on ultimate strength is revealed.
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Report
(4 results)
Research Products
(14 results)
