Postbuckling Behavior of Thin Cylinders

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Abstract
Results of 550 axial load tests on 47 thin cylinders made of Mylar are presented. The experiments show that the number of circumferential buckling waves, N, is a function of L/R in addition to its established dependency on R/t. An approximate relation for N is derived. Also, it is demonstrated that thin cylinders under axial load buckle to a metastable position; that their load-carrying capacity decreases asymptotically toward zero as end shortening increases; and that the postbuckling load deflection behavior is to be represented by a family of nested load deflection curves, where shorter cylinders carry higher loads, rather than a single curve.

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