Dillinger, Johannes und Klimmek, Thomas und Abdalla, M.M. und Gürdal, Z. (2013) Stiffness Optimization of Composite Wings with Aeroelastic Constraints. Journal of Aircraft, 50 (4), Seiten 1159-1168. American Institute of Aeronautics and Astronautics (AIAA). doi: 10.2514/1.C032084. ISSN 0021-8669.
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Offizielle URL: http://arc.aiaa.org/doi/abs/10.2514/1.C032084
Kurzfassung
The drive for ever more efficient aircraft structures stimulates the research to use the full potential of anisotropy of composite materials. The stiffness optimization of the upper and lower skins of a composite wing is demonstrated in this paper. The wing was optimized taking into consideration the mass, strength, buckling, aerodynamic twist, and aileron effectiveness. The elements of the in-plane and bending stiffness matrices and laminate thicknesses were used as design variables. Static aeroelastic analysis was performed using NASTRAN to find the responses of the structure and their sensitivities to the design variables. The results of aeroelastic finite element analysis were processed to create efficient structural approximations of the responses. The approximations were used by a gradient-based optimizer to update the design variables. The separable and continuous approximations in terms of the design variables allowed for the use of efficient parallel computing strategies, in which single or multimodal objective functions were minimized. The first numerical results for a generic wing confirmed a functional setup for multiload case stiffness optimizations with aeroelastic design responses. Stiffness-optimized unbalanced laminates demonstrated a clear advantage over balanced laminates for mass or aileron effectiveness optimizations, with constraints on strength and buckling.
elib-URL des Eintrags: | https://elib.dlr.de/84219/ | ||||||||||||||||||||
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Dokumentart: | Zeitschriftenbeitrag | ||||||||||||||||||||
Titel: | Stiffness Optimization of Composite Wings with Aeroelastic Constraints | ||||||||||||||||||||
Autoren: |
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Datum: | Juli 2013 | ||||||||||||||||||||
Erschienen in: | Journal of Aircraft | ||||||||||||||||||||
Referierte Publikation: | Ja | ||||||||||||||||||||
Open Access: | Nein | ||||||||||||||||||||
Gold Open Access: | Nein | ||||||||||||||||||||
In SCOPUS: | Ja | ||||||||||||||||||||
In ISI Web of Science: | Ja | ||||||||||||||||||||
Band: | 50 | ||||||||||||||||||||
DOI: | 10.2514/1.C032084 | ||||||||||||||||||||
Seitenbereich: | Seiten 1159-1168 | ||||||||||||||||||||
Herausgeber: |
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Verlag: | American Institute of Aeronautics and Astronautics (AIAA) | ||||||||||||||||||||
ISSN: | 0021-8669 | ||||||||||||||||||||
Status: | veröffentlicht | ||||||||||||||||||||
Stichwörter: | stiffness optimization; composite; aeroelastic | ||||||||||||||||||||
HGF - Forschungsbereich: | Luftfahrt, Raumfahrt und Verkehr | ||||||||||||||||||||
HGF - Programm: | Luftfahrt | ||||||||||||||||||||
HGF - Programmthema: | Starrflügler (alt) | ||||||||||||||||||||
DLR - Schwerpunkt: | Luftfahrt | ||||||||||||||||||||
DLR - Forschungsgebiet: | L AR - Starrflüglerforschung | ||||||||||||||||||||
DLR - Teilgebiet (Projekt, Vorhaben): | L - Strukturen & Werkstoffe (alt) | ||||||||||||||||||||
Standort: | Göttingen | ||||||||||||||||||||
Institute & Einrichtungen: | Institut für Aeroelastik > Lastanalyse und Entwurf | ||||||||||||||||||||
Hinterlegt von: | Dillinger, Johannes | ||||||||||||||||||||
Hinterlegt am: | 25 Sep 2013 11:18 | ||||||||||||||||||||
Letzte Änderung: | 08 Mär 2018 18:41 |
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