摘要
本文叙述了在各向均匀外压力作用下正交各向异性壳的失稳特征为：周向整波数n总是大于2，mα1值与1为同级。阐明了计算壳失稳临界压力公式的适用范围。如超出适用范围，所得结果就不正确。本文还从理论上论证了环肋圆柱壳丧失稳定性时其纵向半波数m＝1的条件，提出潜艇环肋圆柱壳的m值恒等于1。
The Author points out that the characteristics of instability for an orthotropic shell under uniform external pressure are: the number of circumferential waves n being always greater than 2 and the value of mα1 being of the same order with 1.The applicable range of the formula used for calculating the critical pressure of instability of this kind of shells is discussed with illustrating examples. It is pointed out that the result obtained would be erroneous if the formula is used beyond this range.Furthermore, this paper has also proved the conditions of the number of longitudinal semi-waves m = 1 when a ring-stiffened cylindrical shell loses stability, demonstrating that the m value of the ring-stiffened cylindrical shell is identically equal to 1.
出处
《中国造船》
EI
CSCD
北大核心
1995年第1期45-53,共9页
Shipbuilding of China
关键词
环肋圆柱壳
总体稳定性
临界压力
潜艇
Ring-stiffened cylindrical shell, General stability, Critical pressure, Submarine
