Inelastic Buckling of Rib-Cored Sandwich Cylinders Under External Hydrostatic Pressure

[+] Author and Article Information
P. S. Theocaris

Laboratory for Testing Materials, Athens National Technical University, Athens, Greece

P. W. Hill

Alleghany Ballistics Laboratory, Cumberland, Md.

J. Appl. Mech 33(3), 593-600 (Sep 01, 1966) (8 pages) doi:10.1115/1.3625126 History: Received November 02, 1964; Revised January 20, 1966; Online September 15, 2011


The extension of the equations of Stein and Mayers to include application to inelastic buckling of orthotopic sandwich shells for those classes of loading for which torsion does not act in combination with axial or lateral forces is presented. A deformation theory of plasticity is used to evaluate the 12 remaining orthotropic rigidities for rib-cored sandwiches. The solution for the critical buckling pressure is given for loading by external hydrostatic pressure. The effect of Poisson’s ratio is discussed, and corrections for the elastic compressibility are presented. These corrections permit a smooth transition from elastic to inelastic solutions.

Copyright © 1966 by ASME
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