Numerical modeling and design of cold-formed steel oval hollow section compression members

J. H. Zhu, B. Young

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

Abstract

The numerical analysis and design of cold-formed steel compression members of oval hollow sections have been investigated. A finite element model was developed to simulate the existing tests on fixedended columns of oval hollowsections.The failure modes observed from the tests included material yielding, local buckling and flexural buckling as well as interaction of local and flexural buckling. The finite element model was developed using ABAQUS. The material non-linearities obtained from tensile coupon tests as well as the initial local and overall geometric imperfections were incorporated in the model. Convergence study was performed to obtain the optimized mesh density. A parametric study included 100 columns was conducted using the verified numerical model. The experimental column strengths and numerical results predicted by the parametric study were compared with the design strengths calculated using the current North American, Australian/New Zealand and European specifications for cold-formed steel structures. In addition, the direct strength method, which was developed for cold-formed carbon steel members for certain qualified cross sections, was also used to predict the design strengths for the oval hollow sections.

Original languageEnglish
Title of host publicationTubular Structures XIV - Proceedings of the 14th International Symposium on Tubular Structures, ISTS 2012
Pages275-281
Number of pages7
Publication statusPublished - 26 Oct 2012
Externally publishedYes
Event14th International Symposium on Tubular Structures, ISTS 2012 - London, United Kingdom
Duration: 12 Sep 201214 Sep 2012

Publication series

NameTubular Structures XIV - Proceedings of the 14th International Symposium on Tubular Structures, ISTS 2012

Conference

Conference14th International Symposium on Tubular Structures, ISTS 2012
CountryUnited Kingdom
CityLondon
Period12/09/1214/09/12

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Building and Construction

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