Abstract
This is the sequel to the author's paper on model analysis, in the current volume. The scheme developed there to tackle the problem of the postbuckling and imperfection sensitivity analysis of structures in the plastic range is extended to shallow shells. A parameter characterizing the extension of the unloading area is used as the perturbation parameter, and the systematic perturbation method designed in the previous paper is modified to solve moving boundary problems in two variables. Relevant formulations are presented and discussed.
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