环肋圆柱壳稳定特性与破坏模式的探讨

A Study of the Stability Features and Buckling Patterns of the Ring-Stiffed Cylindrical Shell

进一步分析和研究环肋圆柱壳在均匀外压力下稳定性计算公式的适用范围，并讨论了ｍα１与１同级的限制是完全不必要的分析探讨了３种破坏模式与结构参数、屈服极限的关系，从理论上详细说明了环肋圆柱壳在３种外力状态下（仅受轴向均匀外压。

This paper presents a further study of the range of applying the stability calculating formula to the ring-stiffened cylindrical shell under uniform external pressure.It is shown that the restriction of the value mα 1 to the order of unity is not necessary.The relations between three buckling patterns and structural parameters as well as yielding point are discussed.It also gives a detailed theoretical explanation of the regularity of the overall stability of the ring-stiffened cylindrical shell under three kinds of external pressure(under only longitudinal,under only circumferential and under uniform external pressure)varying with the geometrical parameters,and points out that the abnormal features of the overall stability of the ring-stiffened cylindrical shell is substantially the features of being subjected to only longitudinal pressure.The above mentioned study is justified by model experiments.