Analysis of strength and resistance to loss of stability of thin-walled channel columns with non-standard cross-sectional shape
 
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Faculty of Mechanical Engineering, Institute of Applied Mechanics, Poznan University of Technology, Poland
 
These authors had equal contribution to this work
 
 
Submission date: 2023-10-17
 
 
Acceptance date: 2023-11-14
 
 
Publication date: 2024-09-29
 
 
Corresponding author
Aleksandra Magdalena Pawlak   

Faculty of Mechanical Engineering, Institute of Applied Mechanics, Poznan University of Technology, 5 Maria Skłodowska-Curie Square, 60-965, Poznan, Poland
 
 
Archives of Civil Engineering 2024;(3):101-116
 
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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 (pure compression). 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.
eISSN:2300-3103
ISSN:1230-2945
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