| Project/Area Number |
15K06632
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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 |
MURAKAMI Chikahisa 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 (90392688)
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| Co-Investigator(Kenkyū-buntansha) |
安藤 孝弘 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 (30425756)
柳原 大輔 九州大学, 工学研究院, 准教授 (10294539)
田中 智行 広島大学, 工学研究科, 助教 (20452609)
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| Research Collaborator |
SETOYAMA Yu 株式会社 富士通九州システムズ
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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 |
¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2017: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2016: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Fiscal Year 2015: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
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| Keywords | 材料・構造力学 / 座屈・最終強度 / FEM解析 / シェル－ソリッドモデル / き裂 / 最終強度 / 崩壊 / 座屈 / 接触 / 繰返し荷重 |
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| Outline of Final Research Achievements |
We perform Nonlinear Finite Element Analyses to examine influence of crack damages on collapse behavior of continuous stiffened panels under longitudinal compression. The FEA models of the continuous panel are imposed have the periodic boundary conditions at all the edges.
As the results of the FEA, in the cases of Transverse Cracks, the rate of the reduction of ultimate strength due to the crack is almost same as the reduction of actual cross-sectional area, except in some cases with small stiffeners that collapse with a global buckling mode.In the cases of Longitudinal Cracks, the ultimate strength is reduced with the increase in length of crack, but the reduction reaches the ceiling, except in the cases which have small stiffeners. The influence of the Longitudinal Crack on the compressive collapse behavior is smaller than the Transverse Crack.
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