Nonstandard Models for Thin-Walled Beams With a View to Applications

[+] Author and Article Information
N. Rizzi

Terza Università di Roma, Facoltà di Architettura, via della Madonna de’ Monti, 40, 00184 Roma, Italy

A. Tatone

Università de L’Aquila, Facoltà di Ingegneria, 67040 Monteluco di Roio (Aq), Italy

J. Appl. Mech 63(2), 399-403 (Jun 01, 1996) (5 pages) doi:10.1115/1.2788878 History: Received May 02, 1994; Revised February 27, 1995; Online October 26, 2007


A direct theory of a one-dimensional structured continuum is introduced in order to study the postbuckling behavior of thin-walled beams. A simply supported beam bent by end couples is analyzed showing that, in the case of nonsymmetric cross sections, lateral buckling gives rise to imperfection sensitivity. Then an axially loaded beam is studied taking also into account the interaction between torsional and flexural buckling. The results obtained prove that in this case imperfection sensitivity, though slighter than in the previous case, arises also for symmetric cross sections.

Copyright © 1996 by The American Society of Mechanical Engineers
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