| Project/Area Number |
08555246
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| Research Category |
Grant-in-Aid for Scientific Research (A)
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| Allocation Type | Single-year Grants |
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| Section | 展開研究 |
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| Research Field |
船舶工学
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| Research Institution | HIROSHIMA UNIVERSITY |
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Principal Investigator |
YAO Tetsuya HIROSHIMA UNIVERSITY,Faculty of Engineering, Cluster IV Professor, 工学部, 教授 (20029284)
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| Co-Investigator(Kenkyū-buntansha) |
YANAGIHARA Daisuke Faculty of Engineering, Cluster IV Research Assistant, 工学部, 助手 (10294539)
KITAMURA Mitsuru Faculty of Engineering, Cluster IV Associate Professor, 工学部, 助教授 (40195293)
FUJIKUBO Masahiko Faculty of Engineering, Cluster Associate IV Professor, 工学部, 助教授 (30156848)
鎌田 岳 (株)新来島どっく, 技術設計本部, 副部長
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| Project Period (FY) |
1996 – 1998
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| Project Status |
Completed (Fiscal Year 1998)
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| Budget Amount *help |
¥7,100,000 (Direct Cost: ¥7,100,000)
Fiscal Year 1998: ¥1,100,000 (Direct Cost: ¥1,100,000)
Fiscal Year 1997: ¥2,000,000 (Direct Cost: ¥2,000,000)
Fiscal Year 1996: ¥4,000,000 (Direct Cost: ¥4,000,000)
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| Keywords | buckling strength / post-buckling behavior / ultimate strength / simple dynamical model / design allowing panel buckling / combined loading / stiffened panel structure / elastic / elastoplastic large deflection analysis / 船体構造 / 防撓パネル / 座屈挙動 / 弾塑性大たわみ挙動 / 弾性大たわみ解析 / 船体上甲板 / 船底外板 / 座屈・塑性崩壊挙動 / 複合荷重 |
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| Research Abstract |
For the development of design method allowing elastic panel buckling, it is necessary to get informations about the exact buckling strength and ultimate strength of the buckled panel.
At first, formula to accurately evaluate local buckling strength of a continuous stiffened panel under bi-axial thrust was analytically derived considering the interaction between the panel and the stiffeners. Influences of welding residual stress and lateral pressure are also considered. In this connection, it was dicsussed what is an appropriate modelling for a continuous stiffened panel subjected to combined bi-axial thrust and lateralpressure.
Then, the collapse behavior of stiffened panel after local buckling was examined and a simplified method was derived to evaluate the compressive ultimate strength of a continuous stiffened pane] under thrust. Be-haviour in the post-ultimate strength range was also examined based on the results of FEM analyses.
At the end, simple dynamical models were developed to simulate buckling/plastic collapse behavior of continuous stiffened plating up to and beyond the ultimate strength.
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