Dynamic progressive buckling of thin wall foam filled conical tubes under impact loading

Document Type : Research Article

Authors

1 Department of Mechanical Engineering, Razi University, Kermanshah, Iran

2 Department of Mechanical Engineering, Razi University, Kermanshah, Iran.

3 Department of Mechanical Engineering, Hamedan University of Technology, Hamedan, Iran

Abstract

Energy absorbers are of particular importance today due to their extensive application in industry, and they are recognized as key elements in enhancing safety and reducing damage resulting from impact. These absorbers dissipate the impact caused by axial loads through plastic deformation and buckling. In this paper, impact loading on foam-filled grooved conical absorbers has been investigated using analytical and numerical simulation methods. Initially, a novel analytical model for calculating the mean crushing force and the amount of energy absorption in foam-filled absorbers is presented. This model is based on elastic and plastic energy absorption, which includes hinge bending and deformation between hinges. Numerical simulation of progressive dynamic crushing in these absorbers has been performed using the Abaqus software, and the results have been compared with the analytical model and experimental results. The aim of this comparison was to evaluate the accuracy of the analytical model in predicting the actual behavior of the absorbers. Finally, the effect of various parameters such as cone angle, number of grooves, and foam density of the absorber on the amount of energy absorption has been investigated. The results of this investigation can be a useful guide in the optimal design of this type of energy absorbers.

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Amirkabir Journal of Mechanical Engineering
Volume 57, Issue 4
July 2025
Pages 497-520

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