Session Start Date

10-19-2000

Abstract

This paper presents a design approach for laterally braced cold-formed steel flexural members with edge stiffened flanges other then simple lips. The design method for flexural members given by Schafer and Pekoz (1999) is used here for designing these complex stiffeners. The method integrates distortional buckling into the unified effective width approach currently used in most cold-formed steel design specifications. A finite element method was first used to investigate the post-buckling behavior and carry out initial geometric imperfection sensitivity studies for various types of stiffeners. Then parametric studies were carried out for different types of stiffeners to compare the moment capacity determined by the finite element method, AISI (1996) and the proposed design approach for flexural members given by Schafer and Pekoz (1999).

Department(s)

Civil, Architectural and Environmental Engineering

Research Center/Lab(s)

Wei-Wen Yu Center for Cold-Formed Steel Structures

Meeting Name

15th International Specialty Conference on Cold-Formed Steel Structures

Publisher

University of Missouri--Rolla

Publication Date

10-19-2000

Document Version

Final Version

Rights

© 2000 University of Missouri--Rolla, All rights reserved.

Document Type

Article - Conference proceedings

File Type

text

Language

English

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Oct 19th, 12:00 AM

A Design Approach for Complex Stiffeners

This paper presents a design approach for laterally braced cold-formed steel flexural members with edge stiffened flanges other then simple lips. The design method for flexural members given by Schafer and Pekoz (1999) is used here for designing these complex stiffeners. The method integrates distortional buckling into the unified effective width approach currently used in most cold-formed steel design specifications. A finite element method was first used to investigate the post-buckling behavior and carry out initial geometric imperfection sensitivity studies for various types of stiffeners. Then parametric studies were carried out for different types of stiffeners to compare the moment capacity determined by the finite element method, AISI (1996) and the proposed design approach for flexural members given by Schafer and Pekoz (1999).