Vibration levels of structures can be significantly reduced by adding some damping materials to the vibrating surfaces. The viscoelastic behavior of these materials induces losses of kinetic energy when they undergo cyclic deformation. A good estimate of the damping loss factor is an important design parameter allowing the creation of efficient damping treatments. For Statistical Energy Analysis (SEA) purposes, the damping loss factor is usually estimated through the Power Injection Method (PIM). This paper presents the application of PIM to obtain the damping loss factor of a typical fuselage panel. In this case, the structure under study is a curved ribbed-stiffened panel. Tests are carried out for undamped and damped conditions. The added damping is provided by layers of viscoelastic material attached to the fuselage skin. The results show the applicability of the method for this kind of structure. It is shown that the high damping imposed by the viscoelastic material leads to some difficulties concerning the measurement technique.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Experimental Determination of the Damping Loss Factor of Highly Damped Ribbed-Stiffened Panels


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:

    Kongress:

    SAE Brasil Noise and Vibration Conference ; 2008



    Erscheinungsdatum :

    30.03.2008




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch


    Schlagwörter :


    Experimental Determination of the Damping Loss Factor of Highly Damped Ribbed-Stiffened Panels

    Martinez, J.O. / Calcada, M. / Jordan, R. et al. | British Library Conference Proceedings | 2008


    Damping Efficiency of Ribbed Panels with Different Damping Materials

    Qian, Y. / Aggarwal, A. / Khan, H. et al. | British Library Conference Proceedings | 1997


    Damping Efficiency of Ribbed Panels with Different Damping Materials

    Aggarwal, Anuj / Khan, Hameed / Qian, Yang | SAE Technical Papers | 1997


    Measurements and SEA Modeling of the Sound Transmission of Ribbed-stiffened Panels

    Gomes, Carlos Henrique / Jordan, Roberto / Gerges, Samir N. Y. | SAE Technical Papers | 2006


    METHOD FOR MANUFACTURING MULTI-RIBBED WING BOX OF COMPOSITE MATERIAL WITH INTEGRATED STIFFENED PANELS

    GIANNI IAGULLI / MARCO RAFFONE / ALBERTO RUSSOLILLO et al. | Europäisches Patentamt | 2020

    Freier Zugriff