On the imperfection sensitivity of complete spherical shells

descriptionPublicationkeyboard_double_arrow_right Article 01 Jan 1987 English Publisher:Springer Science and Business Media LLCJournal:Computational Mechanics, volume 2 (issn: 0178-7675, eissn: 1432-0924,

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Authors: Drmota, M.; Scheidl, R.; Troger, H.; Weinmüller, E.;

doi: 10.1007/bf00282045

On the imperfection sensitivity of complete spherical shells

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Abstract

The imperfection sensitivity of elastic complete spherical shells under external pressure is studied for axisymmetric deformations and qualitatively different types of imperfections by means of a numerical analysis of the Reissner shell equations. It is shown that strong reductions of the critical load are obtained for small deviations of the middle surface of the shell from the perfect spherical configuration whereas imperfections of the shell thickness do not have a substantial influence on the critical load.

Related Organizations

TU Wien
Austria

Keywords

collocation, Membranes, Bifurcation and buckling, finite differences, elastic complete spherical shells, Reissner shell equations, strong reductions of the critical load, Other numerical methods in solid mechanics, imperfection sensitivity, external pressure, bifurcations, axisymmetric deformations

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