Computational Modeling of Cold-formed Steel

The objective of this paper is to summarize recent research and experiences with computational modeling of cold-formed steel conducted within the author’s research group at Johns Hopkins University. This admittedly biased view of computational modeling focuses primarily on the use of the semi-analytical finite strip method and collapse modeling using shell finite elements. Issues addressed include how to fully compare finite strip and finite element solutions, and the importance of imperfections, residual stresses, boundary conditions, element choice, element discretization, and solution controls in collapse modeling of cold-formed steel. The paper concludes with a discussion of areas worthy of future study that are within the domain of cold-formed steel modeling.