Szukana fraza: [Abstract = "Thin\-walled steel elements in the form of openwork columns with variable geometrical parameters of holes were studied. The samples of thin\-walled composite columns were modelled numerically. They were subjected to axial compression to examine their behavior in the critical and post\-critical state. The numerical models were articulately supported on the upper and lower edges of the cross\-section of the profiles."]

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