Buckling and limit states of composite profiles with top-hat channel section subjected to axial compression

• Published in: AIP conference proceedings Vol. 1922; no. 1
• Main Authors: Różyło, Patryk, Dębski, Hubert, Kral, Jan
• Format: Journal Article Conference Proceeding
• Language: English
• Published: Melville American Institute of Physics 05.01.2018
• Subjects: Axial compression; Buckling; Computer simulation; Cross-sections; Eigenvalues; Finite element method; Iterative methods; Limit states; Linearity; Mathematical models; Newton-Raphson method; Nonlinearity; Numerical analysis; Thin wall structures
• ISSN: 0094-243X; 1935-0465; 1551-7616; 1551-7616
• DOI: 10.1063/1.5019072

The subject of the research was a short thin-walled top-hat cross-section composite profile. The tested structure was subjected to axial compression. As part of the critical state research, critical load and the corresponding buckling mode was determined. Later in the study laminate damage areas were determined throughout numerical analysis. It was assumed that the profile is simply supported on the cross sections ends. Experimental tests were carried out on a universal testing machine Zwick Z100 and the results were compared with the results of numerical calculations. The eigenvalue problem and a non-linear problem of stability of thin-walled structures were carried out by the use of commercial software ABAQUS®. In the presented cases, it was assumed that the material is linear-elastic and non-linearity of the model results from the large displacements. Solution to the geometrically nonlinear problem was conducted by the use of the incremental-iterative Newton-Raphson method.