Large loads caused by fluid–structure interaction leading to fatigue failure and added robustness of wing-like structures constitute important design challenges to be addressed. A reduction in the penalties associated to the added structural mass required to withstand rare load scenarios by means of load alleviation control is highly desirable, particularly for efficient light-weight engineering systems, such as aircraft and wind turbine blades. Implementation of morphing for modifying the lift distribution to mitigate the impact of rare, but integrity threatening, loads on wing-like structures offers a potential solution for such challenges. In this paper, a passive load alleviation aerofoil concept featuring variable stiffness multi-stable elements is presented. The adaptability in the structural response of the aerofoil when subjected to aerodynamic forces allows for passively changing from a high lift generation shape, to a load alleviation configuration exploiting the energy of the flow. Passive implementations to achieve load alleviation through morphing result in lighter and simpler designs in comparison to actively actuated solutions.


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    Titel :

    Passive load alleviation aerofoil concept with variable stiffness multi-stable composites


    Beteiligte:
    Arrieta, Andres F. (Autor:in) / Kuder, Izabela K. (Autor:in) / Rist, Mathias (Autor:in) / Waeber, Tobias (Autor:in) / Ermanni, Paolo (Autor:in)

    Erschienen in:

    Composite Structures ; 116 ; 235-242


    Erscheinungsdatum :

    2014


    Format / Umfang :

    8 Seiten, 34 Quellen




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Print


    Sprache :

    Englisch




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