Local Buckling and Sectional Behavior of Fabricated Tubes
Publication: Journal of Structural Engineering
Volume 113, Issue 3
Abstract
A simple kinematic model is proposed to describe the changing shape of a locally buckled or distorted cross section during loading. Based on the kinematic model, a complete moment‐curvature relationship, including the softening branch (the effect of local buckling), is developed and formulated. Reasonably good agreement is found between the theoretical moment‐curvature curve and the available experimental data. Closed‐form expressions are proposed for the softening branch of the moment‐thrust‐curvature relationship. These expressions are useful to study the effect of the local buckling on the maximum strength and post‐buckling behavior of long columns. The local buckling affects the maximum strength and moment‐curvature behavior of sections with diameter‐to‐thickness ratio greater than or equal to 36. The effect of the local buckling increases as the diameter‐to‐thickness ratio increases.
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Information & Authors
Information
Published In
Journal of Structural Engineering
Volume 113 • Issue 3 • March 1987
Pages: 519 - 533
Copyright
Copyright © 1987 ASCE.
History
Published online: Mar 1, 1987
Published in print: Mar 1987
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