Adequately Safe and Efficient Design of Orthogonally Stiffened Cylinders

[摘要] The buckling resistance of orthogonally stiffened cylinders is investigated by using a general purpose finite element program (ABAQUS). The effects of residual stresses arising from shell cold forming the cylinder and welding frame components are considered in the analysis of two stiffened cylinder models with similar material weights and different geometric parameters. A static axial load is applied to the models prior to a non-linear elasto-plastic limit point buckling step which produces large displacement compartment buckling. Residual stress simulation has a reducing effect of approximately 25% on buckling resistance. Cylindrical boundary conditions for Finite Element analysis are formulated that allow torsional displacement and buckling of a sector of a cylinder of half axial height, and of a circumferential arc angle that will divide into 360

[发布机构] University:University of Glasgow

[关键词] Ocean engineering