Two Secondary Effects in Bending of Slit Thin-Walled Tubes

[+] Author and Article Information
F. P. J. Rimrott

University of Toronto, Toronto, Ontario, Canada; de Havilland Canada Ltd., Malton, Ontario, Canada

J. Appl. Mech 33(1), 75-78 (Mar 01, 1966) (4 pages) doi:10.1115/1.3625028 History: Received January 29, 1965; Online September 15, 2011


During bending of a slit, thin-walled circular tube two secondary effects are observed to occur simultaneously. One, the so-called Brazier effect, occurs in thin-walled tubes generally when they are subjected to bending, and consists of an ovaling of the cross section. The second effect is a peculiarity of slit tubes only and manifests itself as an overlap of the free edges. The severity of both effects depends upon the location of the slit. The bending moment and the radial and tangential displacements have been determined as function of the curvature for four different slit locations with respect to the neutral axis. The value of the curvature at instability has also been derived. Subsequently an approximate equation has been obtained for the cantilever. The results of experiments on a cantilever are compared with the theoretical predictions.

Copyright © 1966 by ASME
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