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RESEARCH PAPERS

The Buckling of Thin-Walled Open-Profile Bars

[+] Author and Article Information
Morris Ojalvo

Columbus, Ohio 43221

J. Appl. Mech 56(3), 633-638 (Sep 01, 1989) (6 pages) doi:10.1115/1.3176139 History: Received May 26, 1988; Revised October 25, 1988; Online July 21, 2009

Abstract

The theory of buckling for thin-walled open-profile bars is criticized. Its several derivations are faulted for violating statics, using a variational theorem approximately, using an incorrect variational statement, and/or using an inconsistent filament representation of the bar. Significantly, the theory yields buckling loads that contradict engineering expectations. A theory to replace it with general equations for computing buckling loads is presented. A problem solved under the old and new theories shows how torsional buckling is viewed under the new.

Copyright © 1989 by ASME
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