A strain-energy solution of the buckling of a circular cylindrical shell reinforced by evenly spaced circular ring frames of equal strength under hydrostatic pressure was obtained in Ref. (1). The buckled shape was assumed to be sinusoidal with inflection points at the location of the ring frames. For several geometrical configurations the critical pressure was found to be from two to three times that given by the von Mises solution (Ref, 2).\nThe assumed buckled shape used in Ref. (1) was modified to permit the inflection points of the deformed shape to occur between ring frames.
展开▼
