外部液体から非軸対称静液圧を受ける円筒殻の座屈解析

（内部液体の影響）

抄録

The finite element method is applied to linear buckling analysis of cylindrical shells subjected to asymmetric external and axisymmetric internal liquid pressures. The axisymmetric shell element is used and the load distribution, prebuckling and buckling displacements are represented by Fourier series expansion in the circumferential angle. The shells are assumed to stand vertically with the lower and upper ends simply supported. The analyses are performed for a wide range of the geometric parameter Z for asymmetric external liquid pressures and the effects of internal liquid on the buckling liquid height are investigated. The approximate treatment of tsunami pressure acting on tanks is applied to buckling analysis and the effects of internal liquid pressure are obtained.