Novel method for the prediction of load bearing capacity of compressed C channels considering interaction of buckling modes

Abstract The proposed method focuses on the interaction of global and local buckling. A modified Ayrton‐Perry type buckling curve is to calculate ultimate compression force resistance centrically compressed cold‐formed C channel. new incorporates both effects imperfections shift center gravity caused by slender web plate considered sections. Distortional usually does not play any role for this configuration. effective cross‐section properties use are determined using critical stresses obtained finite‐elements analysis finite strip analysis. will produce an additional second order bending moment amplified with corresponding multiplier. results compared AISI Direct Strength Method global‐local simulation results, in agreement recommendations prEN 1993‐1‐14.