Adaptive and engineering knowledge based metamodeling in multidisciplinary design optimization of aircraft wing structures

Qian Xu, Erich Wehrle, Horst Baier

Publikation: Beitrag in Buch/Bericht/KonferenzbandKonferenzbeitragBegutachtung

3 Zitate (Scopus)

Abstract

Metamodeling methods have been widely studied to alleviate high computation costs on system analysis, such as finite element analysis and computational fluid dynamical simulations, in engineering design optimization. However, the curse of dimensionality is still an obstacle for problems with large numbers of design variables. In this paper, a knowledge-based metamodeling method with adaptive improvement is studied. First, engineering knowledge is shown to be used to reduce computational effort in construction of metamodels. With engineering knowledge, better choice of inputs and outputs to be approximated can be made. Physically meaningful terms, which represent structural mechanical properties are generated algebraically and act as a bridge between design variables and system responses. Second, an expected improvement and possibility of feasibility based infill criterion is used to refine the metamodel iteratively. By doing this, the accuracy of metamodels can be improved while limiting the number of additional sample points. The proposed method is applied to reduce computation effort in an aircraft wingbox structural optimization problem.

OriginalspracheEnglisch
Titel12th AIAA Aviation Technology, Integration, and Operations (ATIO) Conference and 14th AIAA/ISSMO Multidisciplinary Analysis and Optimization Conference
Herausgeber (Verlag)American Institute of Aeronautics and Astronautics Inc.
ISBN (Print)9781600869303
DOIs
PublikationsstatusVeröffentlicht - 2012
Veranstaltung12th AIAA Aviation Technology, Integration, and Operations (ATIO) Conference and 14th AIAA/ISSMO Multidisciplinary Analysis and Optimization Conference - Indianapolis, IN, USA/Vereinigte Staaten
Dauer: 17 Sept. 201219 Sept. 2012

Publikationsreihe

Name12th AIAA Aviation Technology, Integration and Operations (ATIO) Conference and 14th AIAA/ISSMO Multidisciplinary Analysis and Optimization Conference

Konferenz

Konferenz12th AIAA Aviation Technology, Integration, and Operations (ATIO) Conference and 14th AIAA/ISSMO Multidisciplinary Analysis and Optimization Conference
Land/GebietUSA/Vereinigte Staaten
OrtIndianapolis, IN
Zeitraum17/09/1219/09/12

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