Abstract

It is well known that the experimental buckling loads of thin-walled circular cylinders are lower than the bifurcation loads, since thin-walled cylinders are sensitive to initial imperfections. This imperfection sensitivity depends on the radius, the wall thickness and the length of the cylinders as well as on the shape and arrangement of stiffeners. Therefore in searching for the most effective stiffening, it is not sufficient to compare bifurcation loads; one has to take into account the imperfection sensitivity too.

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