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 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.
Topology and Shape Optimization of Ultrathin Composite Self-Deployable Shell Structures with Cutouts
AIAA Journal ; 59 , 9 ; 3696-3709
2021-05-10
14 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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