Post-buckling analysis of imperfect stiffened laminated cylindrical shells under combined external pressure and axial compression

✍ Scribed by Hui-Shen Shen

• Publisher: Elsevier Science
• Year: 1997
• Tongue: English
• Weight: 961 KB
• Volume: 63
• Category: Article
• ISSN: 0045-7949
• DOI: 10.1016/s0045-7949(96)00341-0

✦ Synopsis

A post-buckling analysis is presented for a stiffened laminated cylindrical shell of finite length subject to combined loading of external pressure and axial compression. The formulations are based on a boundary layer theory of shell buckling which includes the effects of the nonlinear pre-buckling deformation, the nonlinear large deflection in the post-buckling range and the initial geometrical imperfection of the shell. The "smeared stiffener" approach is adopted for the stiffeners. The analysis uses a singular perturbation technique to determine the interactive buckling loads and the post-buckling equilibrium paths. Numerical examples cover the performances of perfect and imperfect, stiffened and unstiffened cross-ply laminated cylindrical shells. Typical results are presented in dimensionless graphical form.