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From:
Ali Najafi (ANSYS Inc, Houston, TX 77094, USA) and
Antonio Valente (PLY Technologies GmbH, Germany)
"Design and optimization of Opencell(TM) metal sandwich cylindrical panel", 55th AIAA Structures Meeting, January 2014
ABSTRACT: Mathematical design optimization is utilized to perform design optimization on new sandwich panel concept called Opencell(TM). Opencell(TM) contains two facesheets including an integral cut-and-formed facesheet joined to a flat or curved facesheet. Design optimization of this sandwich panel is challenging due to geometrical interrelations between the cell dimension and the cell depth as well as different forming/cutting geometries. In this study, the optimization performed only on a flat single type of Opencell(TM) topology called Opencell Delta(TM) and the design optimization is performed to find an optimal geometric attributes for this design. Buckling, vibration and local-global static stress analysis is performed to form a multi-objective optimization problem through response surface approximation.
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