Nondestructive Determination of Interaction Curves for Buckling of Stiffened Shells

摘要

The vibration correlation technique for definition of boundary conditions was employed as a nondestructive method to obtain improved interaction curves for stringer-stiffened cylindrical shells under combined axial compression and external pressure. Seven integrally stiffened shells were tested, three shells nominally clamped and four on nominal simple supports. The method of repeated buckling for derivation of interaction curves was also studied, and the preferable sequence of loading was found.