面内剪力对加筋板纵向轴压极限强度的影响分析  

Analysis of ultimate uniaxial compressive strength of stiffened panel considering influence of shear load

作　　者：颜霁 崔进举[1,2] 王德禹 YAN Ji;CUI Jinju;WANG Deyu(State Key Laboratory of Ocean Engineering,Shanghai Jiao Tong University,Shanghai 200240,China;Institute of Marine Equipment,Shanghai Jiao Tong University,Shanghai 200240,China)

机构地区：[1]上海交通大学海洋工程国家重点实验室,上海200240 [2]上海交通大学海洋装备研究院,上海200240

出　　处：《中国舰船研究》2023年第2期149-159,共11页Chinese Journal of Ship Research

基　　金：国家自然科学基金资助项目(51809167)。

摘　　要：[目的]旨在探究面内剪力对加筋板极限强度的影响规律,以及侧向压力与面内剪力之间是否会产生耦合效应。[方法]建立一系列加筋板有限元模型,采用ABAQUS软件进行面内剪力与纵向轴压载荷联合作用下的数值仿真分析,然后对计算结果进行无量纲化处理,并基于最小二乘法对联合载荷作用下的加筋板极限状态曲线/方程进行拟合。[结果]结果显示,面内剪力对加筋板轴压极限强度的影响规律得以明确,得到了考虑剪切载荷作用的加筋板极限状态方程。[结论]所做研究可为面内剪力作用下加筋板的纵向轴压极限强度修正提供参考。[Objective]This study aims to explore the law of the critical compression stress of stiffened panels under the influence of in-plane shear load,and whether in-plane shear load combined with lateral pressure will introduce a strong coupling effect.[Method]To this end,nonlinear finite element(FE)software ABAQUS is used to perform numerical simulation analysis under combined loads on a group of FE models.A limit state equation/curve is then derived from the dimensionless calculation results based on the minimum square error method.[Results]The results show that the influence law of in-plane shear load on the critical compression stress of stiffened panels is clarified,and a limit state equation of stiffened panels that considers the effect of shear load is obtained.[Conclusion]The limit state equation in this paper can provide references for modifying the ultimate strength of stiffened panels under the influence of in-plane shear load.

关 键 词：加筋板 极限强度 面内剪力 侧向压力 联合载荷 

分 类 号：U663.2[交通运输工程—船舶及航道工程]