Structural Optimization Of A Small Aircraft Wing
From Aeroelastic Responses
Author(s)
L. Fitschy, F. Thirifay, E. Wyart, S. Pierret & P. Geuzaine
Abstract
The objective of weight reduction and the introduction of new materials lead to
aeronautical structures that are less stiff. As a consequence, coupled fluid-structure
simulations become essential to predict the performance of aircraft. In addition,
structural design can now benefit from the use of mature optimization techniques.
In this paper, these two disciplines are combined and applied to the structural
design of a lightweight six-passenger aircraft wing.
Keywords: aeroelasticity, optimization, structural design, code coupling.
1 Introduction
A large class of fluid-structure interaction problems require the simultaneous
application of computational fluid dynamics (CFD) and computational structural
dynamics (CSD). Since each discipline has developed powerful specialized
tools, a partitioned procedure is preferred for solving coupled field nonlinear
fluid-structure interactions (FSI) problems. During the past years, CENAERO
has developed a FSI platform involving the coupling of its three-dimensional
unstructured flow solver Argo with the Samcef Mecano [1] finite element structural
solver through theMpCCI [2] software in order to perform aeroelastic simulations.
CENAERO has also developed an optimization software Max to deal with
complex optimization problems. This software allows to perform derivative free
optimization with very few calls to computer intensive simulation software. The
method is based on the use of a genetic algorithm using real coded variables and
on the construction of an approximate model.
In this work, the FSI platform and the optimization software are coupled to
perform the optimization of the structural model of a lightweight six-passenger
aircraft wing with multi-disciplinary constraints. The objective is to minimize
Keywords
aeroelasticity, optimization, structural design, code coupling.
Related Book
Other papers in this volume
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