抄録
The finite element method is applied to 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 analyses are performed for cylindrical shells under axisymmetric and asymmetric external and axisymmetric internal liquid pressures and the accuracy of the previously proposed simplified equations is investigated. The asymmetric and axisymmetric analyses and the simplified equations are applied to the tanks under tsunami and axisymmetric internal liquid pressures. The validity and effectiveness of the axisymmetric analysis and the simplified equations are demonstrated.
