Experimental Investigation of the Interaction of Local and Overall Buckling of Stainless Steel I-Columns

This paper describes an experimental program carried out at the University of Sydney to study the interaction of local and overall flexural buckling in stainless steel I-columns. The columns were composed of cold-formed back-to-back channels, connected with sheet metal screws. Two stainless steel alloys were considered: austenitic AISI304 and ferritic AISI404. Tests were carried out to determine the material properties. The results reveal nonlinear stress-strain behavior with low proportionality limit, moderate anisotropy, and enhanced strength as a result of cold working. A total of 24 columns were tested under an axial load, applied with a nominal eccentricity of Le/1,500, where Le=effective length. The length of the specimens varied between 500 and 3,000 mm in 500-mm increments. Twin specimens were tested for each length. All columns were tested between pinned ends. The research aims to rectify the lack of experimental data on local-overall interaction buckling in stainless steel columns with open cross section.

Language

  • English

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 01146018
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Dec 6 2009 11:14PM