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Photograph supplied by Michael Nemeth, NASA Langley Research Center, Hampton, Virginia
From "Bending tests of large-diameter ring-stiffened corrugated cylinders", by James P. Peterson and James Kent Anderson, NASA TN D-3336, March 1966
SUMMARY:
Results of bending tests on five ring-stiffened corrugated cylinders are presented. The cylinders failed by buckling into a general-instability mode involving buckling of the corrugated wall and reinforcing rings as a composite wall. Buckling in this mode occurred at a load approximately 75 per cent of the load computed with use of a small-deflection buckling theory for cylinders in bending. One of the test cylinders buckled into a panel-instabiloity mode (buckling of corrugated wall between stiffening rings) prior to buckling into the general-instability mode. Buckling in the panel-instability mode was accurately predicted with use of the theory.
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