An original variational formulation is developed for the inverse problem of reconstructing full-field structural displacement and pressure distribution of membrane wings subjected to steady loads from membrane strain distribution. A direct solution approach in cosimulation with fluid-dynamics solvers is also presented. Moving least squares are used to smooth and remap surface strain measurements, estimated from digital image correlation, as needed by the inverse solution meshing. The same approach is used to map the structural and fluid interface kinematics and loads during the fluid–structure cosimulation. Both the direct and the inverse analyses are validated by comparing the direct predictions and the reconstructed deformations with experimental data for prestressed rectangular membranes subjected to static and unsteady loads. The load distributions reconstructed using the inverse analysis are compared with the corresponding loads obtained using the direct analysis. The inverse analysis runs on standard off-the-shelf PCs and can be implemented in real time, providing load-distribution estimates at a rate in the order of tens of data sets per second.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Membrane Shape and Load Reconstruction from Measurements Using Inverse Finite Element Analysis


    Beteiligte:

    Erschienen in:

    AIAA Journal ; 55 , 1 ; 297-308


    Erscheinungsdatum :

    01.01.2017




    Medientyp :

    Aufsatz (Konferenz) , Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch