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This document presents a theoretical study on the torsional buckling strengths of cruciform columns, examining the effects of initial geometric imperfections and residual stresses. A nonlinear elastic torsion theory and a nonlinear finite element model are developed to analyze the torsional behavior up to and beyond the first yield. The findings indicate that both initial twists and residual stresses significantly reduce the ultimate torsional buckling strengths of these columns.

Author

Sabra SABRA

Language

EN