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Koiter asymptotic analysis of thin-walled cold-formed steel members

Ungureanu V., Dubina D., Crisan A., Madeo A., Zagari G., Zucco G., Zinno R.

Acta Mechanica et Automatica

2015

Vol. 9, no. 4

245--251

An imperfection sensitivity analysis of cold-formed steel members in compression is presented. The analysis is based on Koiter’s approach and Monte Carlo simulation. If the modes interaction is correctly accounted, than the limit load and the erosion of critical buckling load can be easily evaluated. Thousands of imperfection can be analysed with very low computational cost and an effective statistical evaluation of limit performance can be carried out. The analysis is done on pallet rack uprights in compression, based on an intensive experimental study carried out at the Politehnica University of Timisoara.