This paper presents two methods to design cutouts that allow damage-free folding of the stiffest possible composite self-deployable thin shell structures of complex shapes. The first method uses level-set functions that define a general number of cutouts. The second method uses a spline representation of the contour of a single cutout and optimizes its shape. Material failure detection is implemented in the solution. Both methods are applied to the design of deployable thin shells forming 90° joints, and multiple viable solutions are obtained. Experiments on the best performing design, a 90 390 μ m thick shell made of Astroquartz with a cyanate ester matrix, with five cutouts on each side, are presented to illustrate and validate the proposed approach.


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    Title :

    Topology and Shape Optimization of Ultrathin Composite Self-Deployable Shell Structures with Cutouts


    Contributors:

    Published in:

    AIAA Journal ; 59 , 9 ; 3696-3709


    Publication date :

    2021-05-10


    Size :

    14 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English





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