Abstract
In this paper, the energy absorption of cylindrical thin-walled AA6061 tubes with different geometric patterns under axial loading has been experimentally analyzed and compared. The thin-walled tubes with various geometrical patterns, including solid without holes, perforated with same-size holes, perforated with regular non-size holes, and perforated with irregular non-size holes were considered as alternatives. The holes with a circular cross-section were made in all perforated tubes. Also, the initial peak force (IPF), the total absorbed energy (TAE), and the specific energy absorption of the tubes (SEA) were considered as the criteria for selecting the best energy absorber option. The Entropy method was used to assign weight to the criteria. In addition, to rank the tubes the multi-criteria decision-making methods of TOPSIS (technique for order of preference by similarity to ideal solution) and MOORA (multi-objective optimization on the basis of ratio analysis) were used. Examining the results showed that the perforated tube with irregular non-size holes is the best option for energy absorption considering all criteria simultaneously despite the higher initial peak of force and lower total absorbed energy than other options. In this optimal pattern, the arrangement of holes is one in the middle with 3 rows of holes, 8 holes in each row, the diameter of the small hole of 5 mm, and the diameter of the large hole of 6 mm.
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Modanloo, V., Elyasi, M. Comparison of energy absorption of cylindrical thin-walled aluminum tubes with various geometrical patterns under axial compression loading using multi-criteria decision-making methods. J Braz. Soc. Mech. Sci. Eng. 46, 257 (2024). https://doi.org/10.1007/s40430-024-04856-4
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DOI: https://doi.org/10.1007/s40430-024-04856-4