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RESEARCH PAPERS

On the Postbuckling Behavior of Imperfection-Sensitive Structures in the Plastic Range

[+] Author and Article Information
J. W. Hutchinson

Division of Engineering and Applied Physics, Harvard University, Cambridge, Mass.

J. Appl. Mech 39(1), 155-162 (Mar 01, 1972) (8 pages) doi:10.1115/1.3422605 History: Received August 14, 1970; Revised December 04, 1970; Online July 12, 2010

Abstract

Aspects of postbuckling behavior are investigated for structures undergoing plastic deformation. The structures singled out are characterized by a highly imperfection-sensitive behavior where buckling takes place in the elastic range. A simple model study is carried out and is followed by an analysis of the plastic buckling of a complete spherical shell under external pressure. In both instances, the bifurcation behavior and subsequent deformation of the perfect structure as well as the influence which geometric imperfections have on buckling are studied.

Copyright © 1972 by ASME
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