摘要
基于Donnell型扁壳理论,利用法分析了在均布外压作用下圆锥形薄壁壳体的弹性稳定性问题。根据外压实验观察结果和通过选取适当的位移分量表达式,文中给出了临界外压的近似表达式。数值结果表明,本文理论分析预示值与临界载荷的实验值很吻合。文中还对有关参数对临界载荷的影响进行了讨论。本文所得结果可供工程应用参考。
A theoretical analysis is presented for elastic stability of thin circular conical shells under external pressure by using Galerkin's procedure and based on Donneli-type theory of shallow shells.The approximate formulas are obtained for critical external pressure.Numerical results show good agreement between theoretical prediction for critical load and experimental data.Results obtained in this paper can be used in engineering design.
出处
《北京航空航天大学学报》
EI
CAS
CSCD
北大核心
1990年第3期50-56,共7页
Journal of Beijing University of Aeronautics and Astronautics
关键词
壳体
圆锥
薄壁
弹性稳定性
circular conical shells,thin shells,stability,Galerkin's procedure,external pressure
