Flexural-Torsional Buckling of Double-Angle Compression Members

Abstract:

The evaluation for double-angle compression members is a tedious procedure and is not an easy task for practicing engineers. In this study, a computer program has been developed to calculate the Pu based on the AISC specifications. It is found that the calculated value is quite close to the tabulated one if effective length (KL) is longer than 10 feet. However, the Pu is not tabulated for effective length less than 10 feet in some lager sections. It is found that the differences between the calculated value and the interpolated value could be as much as 20%. Unfortunately, the difference errors are not on conservative side and the use of interpolated values is not acceptable in practice. This study evaluates all double-angle compressive formulas provided by the AISC manuals and the comparisons among them are presented. The Pu versus KL curves, in which effective lengths less than 10 feet are added and plotted. Some supplementary tabulated values, which required in routine design and not listed in current AISC design manuals, are also furnished. This study will fulfill the needs for those who seek higher performance and wider coverage when evaluating the design of double-angle compression members under flexural-torsion condition.

• Periodical: Applied Mechanics and Materials (Volumes 284-287)
• Pages: 1334-1339
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.284-287.1334
• Online since: January 2013
• Authors: Jui Ling Liu, Dung M. Lue, Ching H. Lin
• Keywords: Buckling, Compressive Members, Double-Angle, Flexural-Torsional, Slenderness Ratio

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