Impact phenomenon is significant for our lives. It can be encountered in many fields. The critical areas are debris impact in space, bird striking on aircraft, ballistic and traffic accidents. For preventing the effect of impacts, some engineering structures are improved and used recently. These structures are used to absorb impact energy by avoiding the transfer of the high magnitude of the load which risks human life and essential part of vehicles that stems from the impact. For road vehicles, crush tubes are used for this purpose. However, they are not efficient, so that tube filling materials are used. Integration of filling materials to tubular systems shows a positive effect on the performance. However, in the case of impact, the impact load crushes the filling material, and filling materials expand laterally. This expansion pushes the boundary of tubular systems and causes bending moment in addition to the uniaxial compressive load at the tubular systems. Auxetic materials which expand laterally under tensile loads and shrink under compressive loads can prevent this incident. Auxetic materials exist in two forms. One of them is a foam form, and the other of them are lattices form. In this study, auxetic lattices are crushed with quasi-dynamic loads to determine their crush efficiencies. Re-entrant, anti-tetrachiral, chiral circular, chiral hexagonal auxetic structures are crushed with 10 mm/min velocity. Specific energy absorption (SEA)values are calculated for each other and compared.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    In-Plane Quasi-Static Crushing Finite Element Analysis of Auxetic Lattices


    Beteiligte:


    Erscheinungsdatum :

    2019-06-01


    Format / Umfang :

    487533 byte




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch



    Finite element modeling of the quasi-static axial crushing of braided composite tubes

    Zhang, Ping / Gui, Liang-Jin / Fan, Zi-Jie et al. | Tema Archiv | 2013


    Dynamic Crushing Behaviors of Four Kinds of Auxetic Structures

    Qiang, Ge Cheng / Wang, Liangmo / Gao, Qiang | SAE Technical Papers | 2019


    Experimental investigation of auxetic structures subjected to quasi static axial load

    Gunaydin, Kadir / Eren, Zana / Scarpa, Fabrizio | IEEE | 2017


    Concepts for Morphing Airfoil Using Novel Auxetic Lattices

    Chen, Zeyao / Wu, Xian / Wang, Zhe et al. | Springer Verlag | 2020


    Concepts for Morphing Airfoil Using Novel Auxetic Lattices

    Chen, Zeyao / Wu, Xian / Wang, Zhe et al. | TIBKAT | 2020