In this paper, crushing characteristics of small-sized conical tubes called miniature frusta under axial loading have been studied. Finite-element model is developed using non-linear explicit code LS_DYNA to investigate the non-symmetrical fold patterns as well as material and geometrical non-linearity of frusta. Numerical simulation is first validated by confirming the results using experimental test data. Effects of shell thickness, semi-epical angle of cone and frusta's length on energy absorption characteristics are then studied by carrying out a parametric study. Based on the crushing parameters of numerous examples, a simplified analytical model as a meta-model for the mean crushing force of miniature frusta is presented using a Genetic Algorithm optimization for finding the meta-model coefficients. Miniature frusta show promising behaviour in lightweight design and crash analysis as their response results in low peak force and efficient-specific energy absorption. Obtained results from the developed meta-model showed good concurrence with finite elements method (FEM) model.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Energy absorption characteristics and a meta-model of miniature frusta under axial impact


    Contributors:

    Published in:

    Publication date :

    2016-05-03


    Size :

    9 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English




    Crashworthy characteristics of thin fibre-reinforced composite frusta under axial collapse

    Mamalis, A.G. / Manolakos, D.E. / Viegelahn, G.L. | Tema Archive | 1989


    Crashworthy characteristics of thin fibre-reinforced composite frusta under axial collapse

    Mamalis,A.G. / Manolakos,D.E. / Viegelahn,G.L. et al. | Automotive engineering | 1989


    Microscopic failure of thin-walled fibre-reinforced composite frusta under static axial collapse

    Mamalis,A.G. / Manolakos,D.E. / Viegelahn,G.L. et al. | Automotive engineering | 1991


    Microscopic failure of thin-walled fibre-reinforced composite frusta under static axial collapse

    Mamalis, A.G. / Manolakos, D.E. / Viegelahn, G.L. et al. | Tema Archive | 1991


    Finite Element Simulation of Axial Collapse of Thin-wall Square Frusta

    Mamalis, A. G. / Manolakos, D. E. / Ioannidis, M. B. et al. | British Library Conference Proceedings | 2000