Imperfection Sensitivity of Externally Pressurized Spherical Shells

1967/03/01 by John W. Hutchinson, J. W. Hutchinson · 10 citations
Engineering · #Advanced Theoretical and Applied Studies in Material Sciences and Geometry #Composite Structure Analysis and Optimization #Elasticity and Wave Propagation

paper · doi:10.1115/1.3607667

Abstract

The initial postbuckling behavior of a shallow section of a spherical shell subject to external pressure is studied within the context of Koiter’s general theory of postbuckling behavior. Imperfections in the shell geometry are shown to have the same severe effect on the buckling strengths of spherical shells as has been demonstrated for axially compressed cylindrical shells. Large reductions in the buckling pressure result from small deviations, relative to the shell thickness, of the shell middle surface from the perfect configuration.

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