Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Analysis of Strength and Resistance to Loss of Stability of Thin‐Walled Channel Columns with Non‐Standard Cross‐Sectional Shape

Version 1 : Received: 13 January 2024 / Approved: 15 January 2024 / Online: 15 January 2024 (16:48:05 CET)

How to cite: Pawlak, A.; Paczos, P. Analysis of Strength and Resistance to Loss of Stability of Thin‐Walled Channel Columns with Non‐Standard Cross‐Sectional Shape. Preprints 2024, 2024011139. https://doi.org/10.20944/preprints202401.1139.v1 Pawlak, A.; Paczos, P. Analysis of Strength and Resistance to Loss of Stability of Thin‐Walled Channel Columns with Non‐Standard Cross‐Sectional Shape. Preprints 2024, 2024011139. https://doi.org/10.20944/preprints202401.1139.v1

Abstract

Experimental tests and numerical analyses were carried out on short, thin-walled channel columns with modified cross-sectional shape. The columns were loaded with an axial compressive force applied at the center of gravity of the cross section. Tests were carried out on a universal testing machine, while numerical analyses were performed in ANSYS software. The purpose of the tests was to determine the values of critical forces for the compressed columns and to determine the values of maximum forces at which failure of the columns occurs. Critical forces were determined based on the strain-averaged method. Based on the study, it was found that the strength and resistance to loss of stability of columns is primarily affected by their stiffness, and therefore by the shape of the cross-sections. In addition, for short columns, it seems more important to determine the value of maximum forces than the values of critical forces.

Keywords

axial compression; loss of stability; maximum and critical force; modified cross‐sectional shape; thin‐walled channel columns

Subject

Engineering, Mechanical Engineering

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