A comparative study on the elastic-plastic collapse strength of initially imperfect deep spherical shells
Abstract:Unfortunately, earlier tests conducted in Ref.[2] provided only one-fourth of the collapse strength predicted by the classical buckling theory. The huge discrepancy existed between the theory and the test is traceable. The test specimens used in Ref. [2] were formed from flat plates, which inevitable introduced significant departures from sphericity as well as variations in thickness and residual stresses. Since the initial imperfection among these adverse factors introduced has been assumed to be the primary … Show more
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