Hello everybody, and a happy new year! Found in Dubbel (Taschenbuch für den Maschinenbau) page C47 7.3.2 the axial load that buckles a thin cylindre. This is not Euler's buckling of a long compressed beam, but probably from Timoshenko's theory for shell buckling applied to a thin cylinder. The book gives: σ = e/R*E/(3(1-μ2))0.5 where σ is the stress, and taking Poisson's coefficient μ as 0.33 I obtain σ/E = 0,612*e/R and F = 3,845*e2*E. As I mistrust buckling computations, I stepped on a soda can over bathroom scales and got instead F = 0,68*e2*E far less... I use this lower value now for my computations, but maybe I botched the experiment? I measured the thickness properly with a micrometer at several positions, tried to step slowly and vertically... Do you have more experimental values, or different formulas from a theory? And if someone steps on a can, please mind your ankle, I hurt mine. Thank you!