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

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. 292-299 (1998)

Fujikubo,M.：“考虑板/加强筋相互作用和侧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。

Fujikubo, M.: "Buckling/Ultimate Strength of Rectangular Plates Subjected to Combined Loads (in Japanese)" Trans. West Japan Society of Naval Arch.No.93. 81-89 (1997)

Fujikubo, M.：“承受组合载荷的矩形板的屈曲/极限强度（日语）” Trans。

Yao, T.: "Buckling/Plastic Collapse Strength of Wide Rect-angular Plate under Combined Pressure and Thrust" J.Soc.Naval Arch.of Japan. Vol.182. 561-570 (1997)

Yao, T.：“宽矩形板在压力和推力联合作用下的屈曲/塑性倒塌强度”J.Soc.Naval Arch.of Japan。

Yao, T.: "Post-Ultimate Strength Behavior of Rectangular Panel under Thrust (in Japanese)" J.Soc.Naval Arch.of Japan. Vol.183. 351-359 (1998)

Yao, T.：“矩形板在推力作用下的极限强度行为（日语）”J.Soc.Naval Arch.of Japan。

Fujikubo, M.: "Influential Factors on Local Buckling Strength of Continuous Stiffened Plate (in Japanese)" Trans. West Japan Society of Naval Arch.No.97. 113-123 (1999)

Fujikubo, M.：“连续加筋板局部屈曲强度的影响因素（日文）”Trans。