Selecting the most efficient cross-section of multi-cell hexagonal tube under axial dynamic loading based on crashworthiness criteria

Document Type : Research Paper


Department of Mechanical Engineering, Faculty of Industrial and Mechanical Engineering, Qazvin Branch, Islamic Azad university, Qazvin, Iran



The purpose of this paper is to select the optimal section of different cross-sectional multi-cell hexagonal tubes under axial dynamic loads in three categories of internal edge thicknesses. The explicit non-linear FE code LS-DYNA is employed for numerical simulation. The results of crashworthiness performance criteria are obtained for various alternatives of configurations. TOPSIS method introduces the rank of different sections. The most effective section in the three categories is selected. In the continuation of the research, the straight inner sides of small hexagons were replaced with semi-elliptic and semicircle, but with respect to the symmetry of the larger hexagon diameter and equal perimeter size in order to evaluate the crashworthiness criteria in the selected section.


Articles in Press, Corrected Proof
Available Online from 14 May 2023
  • Receive Date: 12 April 2022
  • Revise Date: 20 July 2022
  • Accept Date: 23 July 2022
  • First Publish Date: 14 May 2023