Abstract
A study was made of the buckling response of thin-walled circular cylindrical shells subjected to dynamic, transient, axial square-wave (stress) loading of varying time duration. Photoelastic plastic test models were investigated including both geometrically near-perfect and imperfect configurations. Using a nonlinear dynamic buckling anlaysis based upon the Donnell-Mushtari type shell equations, strains and radial deflections were obtained by means of a Galerkin procedure. Dynamic buckling loads were then estimated based upon the notion of a Southwell plot and comparisons made with experimental data. In addition, high-speed framing photography recorded the change in buckling mode isoclinic patterns to compare with analytical predictions. Nondirnensional design graphs were also constructed illustrating dynamic buckling loads of shells for varying geometries and impact durations.
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