Comparative Study of Analytical Methods for Buckling Behavior of Cold-Formed Purlins

IF 0.7 4区 材料科学 Q4 MATERIALS SCIENCE, CHARACTERIZATION & TESTING
J. H. You, Q. L. Wu
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Abstract

The direct strength method (DSM) has become an alternative to the effective width method (EWM) to compute the bending moment capacity of cold-formed channel sections. The traditional EWM examines the nominal moment capacity by the PURLIN program. DSM uses a signature curve from tests on many Australian channel sections to obtain design moment capacity for local and distortional buckling modes. Moreover, the non-linear analysis performed by Strand7 will be compared with the current DSM curve. In general, these comparisons of results are in good agreement: the THIN-WALL program results and the linear static analysis results in Strand7; the moment capacity calculated by the PURLIN program (EWM) and the DSM curve in the local buckling mode; the non-linear analysis results in Strand7 and the DSM curve for each buckling mode. The outcome of this study will benefit structural engineers by providing them with design methods analysis.

Abstract Image

冷弯檩条屈曲行为分析方法比较研究
直接强度法(DSM)已成为有效宽度法(EWM)的替代方法,用于计算冷弯槽钢截面的弯矩承载力。传统的有效宽度法是通过 PURLIN 程序来检查名义弯矩承载力。DSM 使用对许多澳大利亚槽钢截面进行测试后得出的特征曲线,以获得局部和扭曲屈曲模式的设计弯矩承载力。此外,Strand7 进行的非线性分析也将与当前的 DSM 曲线进行比较。总体而言,这些比较结果非常一致:THIN-WALL 程序的结果和 Strand7 的线性静态分析结果;PURLIN 程序 (EWM) 计算的局部屈曲模式下的弯矩承载力和 DSM 曲线;Strand7 的非线性分析结果和每种屈曲模式下的 DSM 曲线。这项研究的成果将为结构工程师提供设计方法分析,使他们受益匪浅。
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来源期刊
Strength of Materials
Strength of Materials MATERIALS SCIENCE, CHARACTERIZATION & TESTING-
CiteScore
1.20
自引率
14.30%
发文量
89
审稿时长
6-12 weeks
期刊介绍: Strength of Materials focuses on the strength of materials and structural components subjected to different types of force and thermal loadings, the limiting strength criteria of structures, and the theory of strength of structures. Consideration is given to actual operating conditions, problems of crack resistance and theories of failure, the theory of oscillations of real mechanical systems, and calculations of the stress-strain state of structural components.
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