摘要
本文在文献[1]的基础上加以推广,分析了在均布外压作用下复合材料三角形网格加筋圆锥壳体总体稳定性,考虑了蒙皮的正交拉弯耦合效应和加筋筋条的偏心效应.基于外压实验观察结果,通过选择恰当的位移分量表达式,本文利用Galerkin法获得了临界外压的近似表达式,并对某一C/E复合材料三角形内网格加筋圆锥壳体的临界外压值进行了理论计算,所得结果与实验值相当吻合.文中所得结果可供工程应用参考.
Based on Ref. [1], a theoretical analysis is presented for the general instability of composite conical shells with triangular grid stiffeners under external pressure. The approximate formulas for critical external pressure are obtained by using Galerkin's procedure and the appropriate expressions for displacement components during buckling are selected. Numerical results are given for composite conical shells with and without triangular grid stiffeners and are in good agreement with the experimental data. The results obtained in this paper can be used in engineering design.
出处
《应用力学学报》
CAS
CSCD
北大核心
1992年第3期44-51,141,共8页
Chinese Journal of Applied Mechanics
关键词
复合材料
壳体
屈曲
稳定性
composite shells
grid conical shells
buckling
general instability
Galerkin's procedure
