Location

Saint Louis, Missouri

Session Start Date

10-18-1994

Abstract

Local,distortional and overall buckling (including overall flexural buckling and overall flexural-torsional buckling) behaviour of cold-formed thin-walled columns is presented which is based on an inelastic spline finite strip analysis. The columns are loaded centrally at the ends. The increment of yield stresses in the corner area due to cold-forming work, together with a more real stress-strain curve of material, that exhibits continuous strain hardening for the stress above the proportional limit of material, are involved in the analysis. The cold-formed section is divided into two different types of strips, one is a flat plate strip on the central part of the plates while the other is a cylinderical shell strip at the corner area. The circular corner effect, which is formed during the manufacture process, is taken into account in the computer programme. A lot of numerial results are obtained, which reveal that the inelastic distortional buckling behaviour is very important.

Department(s)

Civil, Architectural and Environmental Engineering

Research Center/Lab(s)

Wei-Wen Yu Center for Cold-Formed Steel Structures

Meeting Name

12th International Specialty Conference on Cold-Formed Steel Structures

Publisher

University of Missouri--Rolla

Publication Date

10-18-1994

Document Version

Final Version

Rights

© 1994 University of Missouri--Rolla, All rights reserved.

Document Type

Article - Conference proceedings

File Type

text

Language

English

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Oct 18th, 12:00 AM

Buckling Behaviour of Cold-formed Thin-walled Members by Spline Finite Strip Analysis

Saint Louis, Missouri

Local,distortional and overall buckling (including overall flexural buckling and overall flexural-torsional buckling) behaviour of cold-formed thin-walled columns is presented which is based on an inelastic spline finite strip analysis. The columns are loaded centrally at the ends. The increment of yield stresses in the corner area due to cold-forming work, together with a more real stress-strain curve of material, that exhibits continuous strain hardening for the stress above the proportional limit of material, are involved in the analysis. The cold-formed section is divided into two different types of strips, one is a flat plate strip on the central part of the plates while the other is a cylinderical shell strip at the corner area. The circular corner effect, which is formed during the manufacture process, is taken into account in the computer programme. A lot of numerial results are obtained, which reveal that the inelastic distortional buckling behaviour is very important.