Lightweight spacecraft components such as reflectors are very sensitive to acoustic loading, and accurate prediction of peak stresses encountered in an acoustic test is critical to a successful design. A boundary element model (BEM) provides a very accurate means of representing the acoustic input into a finite element model (FEM) of the structure and has proven to be the method of choice for lightweight reflectors. Various aspects of accurate BEM modeling of acoustic input to a FEM of a lightweight reflector will be discussed. This includes choosing the portion of the structure that needs to be modeled to get correct boundary conditions and acoustic input, and also the modeling of the effect of a reverberant chamber on the acoustic response at low frequencies. Predictions will be compared with measured responses for both cases in order to illustrate the critical aspects of this modeling.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Simulating Response of Lightweight Reflectors to Acoustic Tests


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:
    Yang, Michael (Autor:in) / Blelloch, Paul (Autor:in)

    Kongress:

    Aerospace Technology Conference and Exposition ; 2011



    Erscheinungsdatum :

    2011-10-18




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




    Lightweight Composite Reflectors for Space Optics

    Williams, B. E. / McNeal, S. R. / Ono, R. M. et al. | British Library Conference Proceedings | 1998


    Lightweight acoustic enclosures

    SUBAT BRADFORD KYLE | Europäisches Patentamt | 2017

    Freier Zugriff

    LIGHTWEIGHT ACOUSTIC ENCLOSURES

    SUBAT BRADFORD KYLE | Europäisches Patentamt | 2016

    Freier Zugriff

    Lightweight Acoustic Enclosures

    SUBAT BRADFORD KYLE | Europäisches Patentamt | 2016

    Freier Zugriff

    Lightweight Acoustic Enclosures

    SUBAT BRADFORD KYLE | Europäisches Patentamt | 2016

    Freier Zugriff