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PrandtlPlane wing-box least-weight design: a multi-scale optimisation approach

Article dans une revue avec comité de lecture
Author
PICCHI SCARDAONI, Marco
ccMONTEMURRO, Marco
1002421 Institut de Mécanique et d'Ingénierie [I2M]
ccPANETTIERI, Enrico

URI
http://hdl.handle.net/10985/19270
DOI
10.1016/j.ast.2020.106156
Date
2020
Journal
Aerospace Science and Technology

Abstract

The PrandtlPlane (PrP) aircraft wing-box least-weight design is presented in this work. This design problem is formulated as a constrained non-linear programming problem (CNLPP), by integrating static, buckling, fatigue and manufacturability requirements, under different loading conditions. The solution search is carried out by means of a suitable multi-scale optimisation (MSO) approach. The physical responses involved into the CNLPP formulation are evaluated at the wing-box architecture level (macroscopic scale) and at the stiffened panel level (component scale), as well. The scale transition is ensured by means of a suitable global-local (GL) modelling approach, while the CNLPP is solved by means of an in-house genetic algorithm. The effectiveness of the proposed approach is tested on the PrP wing-box structure, but the presented strategy can be easily extended to conventional aircraft wings.

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