Investigation of the parameters affecting the buckling of the stiffened cylindrical shells under axial load

In this study, some parameters affecting the buckling load of stiffened cylindrical shells areinvestigated. These parameters include the type of connection stiffeners to the shell (weldingor glue and rivet), the number, thickness and shape of the cross-sectional area of the longitudinaland circumferential stiffeners, the shell thickness, the shape and the imperfection ratio and sizeof the cutout created in the shell. For this purpose, both analytical and numerical methods havebeen used. In the analytical method, the energy method is used and in the numerical method,Abacus software is used. In this study, in addition to previous works, on how to attach stiffenersto the shell, the effect of imperfection ratio of elliptic and rectangular cutout and also the effectof some parameters related to longitudinal and circumferential stiffeners such as the effect ofcross section shape and their number on the buckling load have been investigated separately.