2012 Fiscal Year Final Research Report
Derivation of design loads by structural reliability method
| Project/Area Number |
23656549
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Naval and maritime engineering
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| Research Institution | Osaka University |
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Principal Investigator |
IIJIMA Kazuhiro 大阪大学, 大学院・工学研究科, 准教授 (50302758)
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| Project Period (FY) |
2011 – 2012
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| Keywords | 材料 / 構造力学 / 信頼性工学 |
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| Research Abstract |
First Order Reliability Method (FORM) is adopted to derive irregular wave trains which yield response equivalent to the maximum response at an arbitrary probability level in a period. It is shown that the method is effective in determining the structural design loads for linear/nonlinear response. The method is also applied to the cumulative collapse behavior of a ship’ s hull girder in a short term sea state. It turned out that the most probable severe collapse scenario is the one extreme event rather than a series of extreme waves.
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