For morphing wing skin applications, low in-plane stiffness is advantageous to reduce the cost of actuation and high out-of-plane stiffness is required to withstand the aerodynamic loads. A proposed solution is to engineer a composite material made of a honeycomb support combined with a multi-state infill that can reduce the Young's modulus for a low in-plane stiffness. Assuming thin beam theory and using the potential energy formulation, equivalent in-plane Young's moduli can be calculated for a range of honeycomb cell geometries. The out-of-plane deflection of a representative plate fixed on all edges is calculated using flat plate theory and used to assess the performance of the skin system. To optimize the cell geometry for a given application, the out-of-plane deflection is constrained and the honeycomb cell geometry varied to investigate the design space. Results show that a skin can be designed to have in-plane Young's moduli similar to the polymer infill and still have a low out-of-plane deflection. However, these results come at the expense of increased skin weight. Further analysis to obtain a more realistic design is done by imposing weight and geometric constraints.


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    Titel :

    Design of a morphing skin by optimizing a honeycomb structure with a two-phase material infill


    Weitere Titelangaben:

    Gestaltung von durch Spezialeffekte (Morphing) veränderte Außenhaut(von Tragflächen) durch Optimierung der Bienenwabenstruktur mit Auffüllung mit einem Zweiphasenwerkstoff


    Beteiligte:
    Puttmann, John (Autor:in) / Beblo, Richard (Autor:in) / Joo, James (Autor:in) / Smyers, Brian (Autor:in) / Reich, Gregory (Autor:in)


    Erscheinungsdatum :

    2012


    Format / Umfang :

    7 Seiten, 15 Bilder, 1 Tabelle, 8 Quellen




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




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