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initial postbuckling analysis of elastoplastic thin-shear structuresThe design of thin shell structures with respect to elastoplastic buckling requires an extended analysis of the influence of initial imperfections. For conservative design, the most critical defect should be assumed with the maximum allowable magnitude. This defect is closely related to the initial postbuckling behavior. An algorithm is given for the quasi-static analysis of the postbuckling behavior of structures that exhibit multiple buckling points. the algorithm based upon an energy criterion allows the computation of the critical perturbation which will be employed for the definition of the critical defect. For computational efficiency, the algorithm uses the reduced basis technique with automatic update of the modal basis. The method is applied to the axisymmetric buckling of cylindrical shells under axial compression, and conclusions are given for future research.
Document ID
Document Type
Conference Paper
Carnoy, E. G.
(Novatome Le Pessis-Robinson, France)
Panosyan, G.
(Novatome Le Pessis-Robinson, France)
Date Acquired
August 12, 2013
Publication Date
October 1, 1984
Publication Information
Publication: NASA. Langley Research Center Res. in Struct. and Dyn., 1984
Subject Category
Distribution Limits
Work of the US Gov. Public Use Permitted.

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