This study was motivated by the desire to develop accurate simulation models for the deployment dynamics of future, ultralight deployable structures consisting of multiple thin shells packaged elastically, through a combination of folding and coiling. The specific problem studied is the packaging and unconstrained deployment of a rectangular space frame formed by two thin-shell longerons connected by multiple transverse rods, and called a strip. The study included experiments on high-quality test articles, using a suspension system with low inertia and friction. The elastic folds in the strips were tracked with high-speed three-dimensional digital image correlation for deployment in both air and near-vacuum. The study also developed a high-fidelity finite element model of the strips that captures the elastic, localized deformation that occurs during the initial folding, the self-contact between different parts of the structure as the folding develops, and the strain energy stored during the folding process. This model accurately captured the deployment dynamics and self-latching of the strips, as well as the effects of air on deployment.


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    Titel :

    Deployment Dynamics of Thin-Shell Space Structures


    Beteiligte:

    Erschienen in:

    Erscheinungsdatum :

    2022-01-31


    Format / Umfang :

    14 pages




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch




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