肋间壳板失稳是潜艇耐压壳体失稳的重要形式之一，加设纵骨是提高环肋圆柱壳肋间壳板稳定性的有效方法。通过理论计算，得出以下结论：加设纵骨可以提高环肋圆柱壳肋间壳板稳定性，且α值越大，效果越明显；加设纵骨后的环肋圆柱壳在肋间壳板失稳时，纵向失稳半波数等于1，周向失稳波数大于10，且纵骨尺寸越大，周向失稳波数越大；失稳临界压力随肋距的减小而增大，随纵骨尺寸的增加而增大。
Losing stability of shell between ribs is one of important form for submarine pressure hull. To improve the stability of shell between ribs for cylindrical shell, adding longitudials is a effective way. The following conclusion is gotten by theoretical calculation. Adding longitudinals improves the stability of shell between ribs for the ring-stiffened cylindrical shell whose longitudinal losing stability semi-wave number is equal 1, and circular losing stability wave number is more than 10.,the more value of α, the more obvious effect. Circular losing stability wave number increases with increasing longitudinals size, and losing stability critical pressure increases with decreasing of rib distance and increasing longitudinals size.
2017,39(4): 35-39 收稿日期：2016-03-02
DOI：10.3404/j.issn.1672-7619.2017.04.007
分类号：U663.1
作者简介：王小明(1981-),男,工程师,从事船舶结构设计与研究工作。
参考文献：
[1] 王晓天, 邓剑平, 宁林, 等. 环肋圆柱壳稳定特性与破坏模式的探讨[J]. 哈尔滨工程大学学报, 1997(6):13-21. WANG Xiao-tian, DENG Jian-ping, NING Lin, et al. A study of the stability features and bulking pattern of the ring-stiffened cylindrical shell[J]. Journal of Harbin Engineering University, 1997(6):13-21.
[2] 谢祚水. 许辑平. 潜艇薄壁大半径圆柱壳的总稳定性[J]. 中国造船, 1994(2):82-88. XIE Zuo-shui. XU Ji-ping. On the overall stability of submarine circular cylindrical shells with large diameters and thin thicknesses[J]. Shipbuilding of China, 1994(2):82-88.
[3] 谢祚水. 环肋圆柱壳稳定特性研究[J]. 中国造船, 1998(4):73-80. XIE Zuo-shui. Stability study of ring-stiffened circular cylindrical shell[J]. Shipbuilding of China, 1998(4):73-80.
[4] 王林, 谢祚水. 纵横加肋耐压圆柱壳结构稳定性[J]. 造船技术, 1998(12):23-25. WANG Lin, XIE Zuo-shui. Stability of longitudinal and transverse stiffened cylindrical shell structure[J]. Technology of Shipbuilding, 1998(2):23-25.
[5] 谢祚水. 受均匀外压力作用的圆柱壳结构形式的初步探讨[J]. 镇江船舶学院学报, 1990, 4(4):31-37. XIE Zuo-shui. Preliminary study of structure type of circular cylindrical shell under uniform external pressure[J]. Journal of Zhenjiang Shipbuilding Institute, 1990, 4(4):31-37.
[6] 谢祚水. 王志军. 潜艇耐压圆柱壳结构的优化设计[J]. 中国造船, 1993(12):23-25. XIE Zuo-shui. WANG Zhi-jun. Optimum design of circle cylindrical pressure shell for submarine[J]. Shipbuilding of China. 1993, (12):23-25.
[7] 许辑平. 潜艇强度[M]. 北京:国防工业出版社.1980. XU Ji-ping. Strength of Submarine[M]. Beijing:National Defense Industry Press, 1980.
[8] 王小明. 肋距对环肋圆柱壳壳板稳定性的影响[J]. 中国舰船研究, 2013, 8(6):81-84. WANG Xiao-ming. The influence of frame interval on the stability of ring-stiffened cylindrical shells[J]. Journal of Ship Research, 2013, 8(6):81-84.
