2015 Fiscal Year Final Research Report
Collapse Behavior of Steel Sandwich Panels Subjected to Combined Loads
| Project/Area Number |
25420868
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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 | Ehime University |
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Principal Investigator |
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| Project Period (FY) |
2013-04-01 – 2016-03-31
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| Keywords | 鋼製サンドイッチパネル / コルゲートコア / ウェブコア / 面内圧縮荷重 / 面外分布荷重 / 最終強度 / 座屈 / 有限要素解析 |
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| Outline of Final Research Achievements |
This study targets steel sandwich panels with corrugated or web cores. Collapse behaviors of the sandwich panels subjected to single or combined uniaxial or biaxial in-plane compression and lateral pressure are examined. It is found that local collapse of the core panel easily takes place in the panel under lateral pressure, and smaller ultimate strength is obtained in the sandwich panel with insufficient core-thickness compering with the stiffened panel with the same bending stiffness. In the panel under in-plane compression, the sandwich panel has the same or larger ultimate strength comparing with the stiffened panel. Simplified equations and methods to estimate the ultimate strength of the sandwich panel under single uniaxial compression and lateral pressure are derived. These are validated through the comparison with the FEA results. It is clarified that improvement is needed to heighten the accuracy of the estimation but these equations and method have a sufficient availability.
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| Free Research Field |
船体構造力学
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