环肋圆柱壳三维应力分析方法计及面内法向载荷和应力的影响，可计算圆柱壳和肋骨任意位置的结构应力。本文根据三维应力分析方法导出内置环肋圆柱壳结构的典型应力计算式，并通过文献中的算例检验应力计算式的正确性。采用典型应力计算式对不同结构特征的内置环肋圆柱壳进行系列计算，通过与有限元仿真计算结果比较，研究分析典型应力计算式对不同圆柱壳厚度特征（t/R）、肋骨高度特征（H/R）、肋骨宽度特征（W/l）等参数的适应性。结果表明，基于三维应力分析方法的内置环肋圆柱壳典型应力计算式不仅可以适应薄壳和中厚壳结构应力计算，且对于不同的肋骨形状也具有较好的适应性。
The three dimensional stress analysis method accounting the influence of in-plane normal loads and stress can calculate structural stress at any position of ring-stiffened cylindrical shell. This paper derived typical stress calculation formula for inside ring-stiffened cylindrical shell based on three dimensional stress analysis method, and verified correctness of the calculation formula through examples in literature. A series of calculation are conducted on inside ring-stiffened cylindrical shell using the formulas. Comparing with finite element simulation, the adaptability of typical stress calculation formula to different structural characteristic parameters such as shell thickness, ring-stiffened height, and ring-stiffened width was analyzed. The results show that the formulas in this paper not only can adapt to the stress calculation of thin shell and medium-thick shell, but also have good adaptability to different ring-stiffened shapes.
2024,46(24): 15-19 收稿日期：2024-3-18
DOI：10.3404/j.issn.1672-7649.2024.24.003
分类号：U661
基金项目：国家重点研发计划资助项目（2022YFC2808204）
作者简介：陈沙古(1984-),男,硕士,高级工程师,研究方向为水下结构理论设计与试验技术
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