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Parametric optimization of a lattice aircraft fuselage barrel using metamodels built with genetic programming

Lohse-Busch, Heike and Huehne, Chr. and Liu, D. and Toropov, Vassili (2013) Parametric optimization of a lattice aircraft fuselage barrel using metamodels built with genetic programming. In: 14th International Conference on Civil, Structural and Environmental Engineering Computing. Civil-Comp Press. 14th International Conference on Civil, Structural and Environmental Engineering Computing, CC 2013, 3. -6. Sept. 2013, Cagliari, Sardinia; Italy. ISBN 978-190508857-7 ISSN 17593433

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Abstract

In the EU FP7 collaborative research programme ALaSCA (Advanced Lattice Structures for Composite Airframes), the novel design of an anisogrid composite fuselage section has been optimized using topology optimization with respect to weight and structural performance. According to the concept of an extended uniform Latin hypercube design of numerical experiments (DOE), a 101-point DOE has been developed. Each data point represents a set of the geometric fuselage barrel parameters, which are simulated using finite element (FE) method. Using these training data sets, the global metamodels have been built as explicit expressions of the design parameters using genetic programming (GP). This was followed by the parametric optimization of the fuselage barrel by genetic algorithm (GA) to obtain the best design configuration in terms of weight savings subject to stability, strength and strain requirements. The optimal solution has been verified using the finite element simulation of the lattice fuselage barrel and the true structural responses have been compared to those provided by the metamodels. It is concluded that the use of the global metamodel-based approach has enabled the solution of this optimization problem with sufficient accuracy as well as provided the designers with a wealth of information on the structural behaviour of the novel anisogrid design of a composite fuselage.

Item URL in elib:https://elib.dlr.de/99142/
Document Type:Conference or Workshop Item (Speech)
Additional Information:Project: Advanced Lattice Structures for Composite Airframes (ALaSCA)
Title:Parametric optimization of a lattice aircraft fuselage barrel using metamodels built with genetic programming
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Lohse-Busch, HeikeDLR, Institute of Composite Structures and Adaptive SystemsUNSPECIFIED
Huehne, Chr.DLR, Institute of Composite Structures and Adaptive SystemsUNSPECIFIED
Liu, D.School of Civil Engineering, University of Leeds, United KingdomUNSPECIFIED
Toropov, VassiliV.V.Toropov (at) leeds.ac.ukUNSPECIFIED
Date:2013
Journal or Publication Title:14th International Conference on Civil, Structural and Environmental Engineering Computing
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Publisher:Civil-Comp Press
ISSN:17593433
ISBN:978-190508857-7
Status:Published
Keywords:Composite structures; Computer aided engineering; Design; Electric network parameters; Environmental engineering; Finite element method; Genetic programming; Optimization
Event Title:14th International Conference on Civil, Structural and Environmental Engineering Computing, CC 2013
Event Location:Cagliari, Sardinia; Italy
Event Type:international Conference
Event Dates:3. -6. Sept. 2013
Organizer:Civil-Comp Press
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:fixed-wing aircraft
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Simulation and Validation
Location: Braunschweig
Institutes and Institutions:Institute of Composite Structures and Adaptive Systems > Functional Lightweight Structures
Deposited By: Lohse-Busch, Heike
Deposited On:20 Nov 2015 14:50
Last Modified:10 May 2016 23:33

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