Volume: 2, 2023
2nd International PhD Student’s Conference at the University of Life Sciences in Lublin, Poland:
ENVIRONMENT – PLANT – ANIMAL – PRODUCT
Abstract number: T010
DOI: https://doi.org/10.24326/ICDSUPL2.T010
Published online: 19 April 2023
ICDSUPL, 2, T010 (2023)
Stability of thin-walled composite columns with top-hat cross-section
Błażej Czajka1*
1 Department of Machine Design and Mechatronics, Faculty of Mechanical Engineering, Lublin University of Technology, Nadbystrzycka 38D, 20-618, Lublin, Poland
* Corresponding author: blazej.czajka@pollub.edu.pl
Abstract
The presented research is focused on the stability of compressed thin-walled composite structures. The columns had a top-hat cross-section of 60 × 30 × 15 mm and a height of 200 mm. The tests used specimens made of 8 laminate plies using CFRP material. Two different layer arrangements W1 – [0/-45/45/90]s and W2 – [90/0/90/0]s were prepared. Both experimental studies and numerical analysis were conducted. Numerical analysis were performed using the finite element method (FEM) in Abaqus software. Prepared columns were compressed between two non-deformable plates. The values of the critical loads and the buckling shapes were investigated. Experimental studies were used to validate numerical simulations. Three specimens were investigated in each layer layout. Specimens were prepared using the autoclave technique. The tests were conducted on a universal testing machine. The columns were compressed at a constant velocity. Deflection value was measured with a laser sensor. The post-buckling equilibrium paths were established and then the critical loads were determined using the P-wc3 approximation method. A comparison of critical loads from the two testing methods shows very similar results. The results of each lay-ups were also compared. The W1 layer arrangement was characterized by a higher critical load. The same sample had a lower difference between the experimental and numerical results (3%). For lay-up W2, the experimental and numerical results were 12% different. The buckling pattern was very similar for experimental and numerical studies.
How to cite
B. Czajka, 2023. Stability of thin-walled composite columns with top-hat cross-section. In: 2nd International PhD Student’s Conference at the University of Life Sciences in Lublin, Poland: Environment – Plant – Animal – Product. https://doi.org/10.24326/ICDSUPL2.T010