This paper concerns with experimental and numerical studies on buckling of thin-walled cylindrical shells under oblique loading. The buckling loads are obtained from finite element models. Experiments are conducted on several Specimens made of stainless steel 316ti by using an INSTRON 8802 servo-hydraulic machine. Then results are compared. A very good correlation was observed between numerical simulation and experimental results. Investigations on buckling and postbuckling behavior of cylindrical shells with cutout were carried out for shell length (L), shell diameter (D) and cutout position (CP/L ratio). The specimens were constrained by fixtures that design for this result and inserted at both ends, which mimics the fixed boundary condition used in the finite element simulations.

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