On Development of Design Method Allowing Buckling

允许屈曲设计方法的发展

• 批准号: 08555246
• 负责人: YAO Tetsuya
• 金额: $ 4.54万
• 依托单位: HIROSHIMA UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (A)
• 财政年份: 1996
• 资助国家: 日本
• 起止时间: 1996 至 1998
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-08555246/
• 关键词: 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 /

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.

为了开发允许弹性面板屈曲的设计方法，有必要获得有关屈曲面板的准确屈曲强度和极限强度的信息。首先，准确评估双轴推力下连续加筋面板的局部屈曲强度的公式是考虑面板和加强筋之间的相互作用而分析得出的。还考虑了焊接残余应力和侧压力的影响。在这方面，讨论了承受双轴推力和侧压力联合作用的连续加筋板的合适模型。然后，检查了加筋板局部屈曲后的倒塌行为，并导出了评估压缩性的简化方法。连续加筋玻璃的极限强度]在推力作用下。还根据有限元分析的结果检查了最终强度范围内的行为。最后，开发了简单的动力学模型来模拟连续加筋板达到或超过极限强度的屈曲/塑性塌陷行为。

项目成果

Yao,T.,: "Buckling/Plastic Collapse Behaviour and Strength of Stiffened Plates Under Thrust" Int.J.Offshore and Polar Engineering. Vol.7,No.4. 285-292 (1997)

Yao,T.，：“推力下加劲板的屈曲/塑性破坏行为和强度”Int.J.Offshore and Polar Engineering。

矢尾哲也: "面内圧縮荷重を受ける連続防撓パネルの座屈・塑性崩壊挙動に関する研究" 西部造船会会報. 第92号. 263-274 (1996)

Tetsuya Yao：“连续加劲板在平面内压缩载荷作用下的屈曲和塑性塌陷行为研究”西方造船师协会通报第 92. 263-274 (1996)。

Yao,T.: "Development of a Simple Dynamical Model to Simulate Collapse Behaviour of Plates with Welding Residual Stresses under Inplane Thrust" 西部造船会会報. 第94号. 171-182 (1997)

Yao, T.：“开发一种简单的动力学模型来模拟平面内推力下焊接残余应力板的塌陷行为”，西方造船工程师学会公报，第 94 期。171-182 (1997)。

Fujikubo,M.,: "Elastic Local Buckling Strength of Stiffened Plates Considering Plate/Stiffener Interaction and Lateral Pressure" Proc.8th Int.Offshore and Polar Eng.Conf.,Montreal,Canada. Vol.IV. 292-299 (1998)

Fujikubo,M.，：“考虑板/加强筋相互作用和侧向压力的加筋板的弹性局部屈曲强度”Proc.8th Int.Offshore and Polar Eng.Conf.，加拿大蒙特利尔。

藤久保昌彦: "連続防撓パネルの局部座屈強度に対する諸因子の影響について" 西部造船会会報. 第97号. (印刷中) (1999)

Masahiko Fujikubo：“论各种因素对连续加筋板局部屈曲强度的影响”，西方造船工程师学会公报第 97 号。（出版中）（1999 年）。