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Towards the Design of Cold-formed Steel Foam Sandwich Columns

TitleTowards the Design of Cold-formed Steel Foam Sandwich Columns
Publication TypeConference Paper
Year of Publication2012
AuthorsSzyniszewski S, Smith BH, Meimand V, Hajjar JF, Arwade SR, Schafer BW
Conference Name21st International Specialty Conference on Cold-Formed Steel Structures - Recent Research and Developments in Cold-Formed Steel Design and Construction
Date Published10/2012
Conference LocationSt. Louis, MO
Abstract
In this paper a design method for the compressive capacity of sandwich panels comprised of steel face sheets and foamed steel cores is derived and verified. Foamed steel, literally steel with internal voids, provides the potential to mitigate many local stability issues through increasing the effective width-to-thickness of the component for the same amount of material. Winter's classical effective width expression was generalized to the case of steel foam sandwich panels. The provided analytical expressions are verified with finite element simulations employing brick elements that explicitly model the steel face sheets and steel foam cores. The closed-form design expressions are employed to conduct parametric studies of steel foam sandwich panels with various face sheet and steel foamed core configurations. The studies show the significant strength improvements possible with steel foam sandwich panels when compared with plain steel sheet/plate.