Recent advancements in crashworthiness analysis of functionally graded foam-filled tubes are achieved by studying the energy absorption characteristics in lateral or axial directions, separately. In this paper, for the first time, two-directional (lateral and axial directions together) functionally graded foams (TDFGFs) under axial crushing loads are considered. The effect of variations of foam density on the specific energy absorption (SEA) and peak crushing force (PCF) is studied by controlling the gradient exponential parameters which give rise to significant effects on the crashworthiness of TDFGFs. Also, it is further analysed that how the mass of the TDFGF tube changes values of SEA in crushing process. In addition, as the result of performing multi-objective particle swarm optimisations, it is seen that the energy absorption characteristics of TDFGFs for higher values of gradient exponential parameters are improved significantly. The crashworthiness properties of optimum configurations for TDFGF are compared with the extreme cases of minimum, maximum densities and uniform foam-filled tubes with the same weight as the corresponding TDFGF tubes. Finally, a global sensitivity analysis is carried out. The results of this analysis reveal that the SEA and PCF functions are generally sensitive to the variations of the gradient exponential parameters.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Crashworthiness efficiency optimisation for two-directional functionally graded foam-filled tubes under axial crushing impacts


    Contributors:

    Published in:

    Publication date :

    2017-05-04


    Size :

    15 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English




    Optimisation for bending crashworthiness of functionally graded foam-filled cellular structure

    Yin, Hanfeng / Chen, Can / Hu, Te et al. | Taylor & Francis Verlag | 2018


    Axial crushing of foam-filled tapered sheet metal tubes

    Reid, S.R. / Reddy, T.Y. | Tema Archive | 1986


    Crashworthiness assessment of foam-filled internally strengthened carbon fibre-reinforced composite tubes under axial compression

    Alshahrani, Hassan / Almeshari, B. / Abd El-baky, Marwa A. et al. | Taylor & Francis Verlag | 2024



    Crashworthiness analysis and structural optimisation of multi-cell square tubes under axial and oblique loads

    Zou, Xiang / Gao, Guangjun / Dong, Haipeng et al. | Taylor & Francis Verlag | 2017