In this study, a multi-level bionic multi-cell tube (MBMT-n) is proposed, inspired by the horsetail’s cross-sectional structure, and the multi-cell tube shape and distribution characteristics of bamboo vascular bundles. A systematic crashworthiness analysis of MBMT-n under axial dynamic impact was conducted using LS-DYNA. The findings indicate that MBMT-n can enhance crashworthiness while maintaining the same mass. Additionally, the impact of wall thickness and bionic unit cell’s length–width ratio was investigated. Furthermore, a theoretical prediction model for mean crushing force (MCF) was established using the simplified super-folding unit theory. Lastly, to further enhance the structure’s crashworthiness, multi-objective optimisation of MBMT-3 was performed using the NSGA-II algorithm. The several optimal structures were subsequently identified under various peak crushing force (PCF). This study offers a novel approach to the design of energy-absorbing structures.


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    Title :

    Crashworthiness analysis and optimisation of a multi-level bionic multi-cell tube under axial dynamic impact


    Additional title:

    X. Ma et al.
    International Journal of Crashworthiness


    Contributors:
    Ma, Xiaofei (author) / Guo, Ce (author) / Shen, Jingyu (author) / Hu, Caiji (author) / Gao, Haojun (author) / Wang, Hongqian (author)

    Published in:

    Publication date :

    2025-05-04


    Size :

    18 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English




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