2012 Fiscal Year Final Research Report
Investigation of Ship Structural Design Method by Means of Structural Reliability Approach and Design Irregular Wave Method
| Project/Area Number |
22560799
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Naval and maritime engineering
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| Research Institution | Osaka Prefecture University |
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Principal Investigator |
FUKASAWA Toichi 大阪府立大学, 大学院・工学研究科, 教授 (80143171)
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| Research Collaborator |
MIYAZAKI Satoshi 三菱重工業(株), 長崎造船所造船設計部船殻設計課, 技師
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| Project Period (FY) |
2010 – 2012
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| Keywords | 船体構造設計 / 弾性振動 / 最大応答 / 確率分布 / 疲労強度 / マイナー則 |
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| Research Abstract |
This study aimed to examine the statistical characteristics of ship response in irregular sea way on the assumption that the design irregular wave method is used in the hull structural design and to propose a more accurate structural design method. Stresses generated in the hull-girder of a ship in irregular waves appear as the superposition of the flexible vibration component that varies in the natural frequency of the hull on the hydrodynamic component varying in encounter period with the waves. In the research, the probability distribution pattern of maximum response of a ship in irregular wave is investigated and the effect of flexible vibration component on the fatigue damage isclarified.
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