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Electro-aeromechanical modelling of actuated membrane wings

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Title: Electro-aeromechanical modelling of actuated membrane wings
Authors: Buoso, S
Palacios, R
Item Type: Journal Article
Abstract: This paper presents a numerical investigation on the aeromechanical performance of dynamically actuated membrane wings made of dielectric elastomers. They combine the advantages of membrane shape adaptability, which produces increased lift and delayed stall, with the benefits of simple, lightweight but high-authority control mechanism offered by integral actuation. High-fidelity numerical models have been developed to predict their performance and include a fluid solver based on the direct numerical integration of the unsteady Navier-Stokes equations, an electromechanical constitutive material model and a non-linear membrane structural model. Numerical results show that harmonic actuation can either increase or reduce the overall aerodynamic efficiency of the wing, measured as the mean lift-to-drag ratio, depending on the ratio between the actuation frequency and the natural frequency of the membrane. In addition, the definition of a reduced-order model based on POD modes of the complete high-fidelity system provides an insight of the main characteristics of the dynamics of the coupled system.
Issue Date: 1-Oct-2015
Date of Acceptance: 24-Aug-2015
URI: http://hdl.handle.net/10044/1/25858
DOI: 10.1016/j.jfluidstructs.2015.08.010
ISSN: 0889-9746
Publisher: Elsevier
Start Page: 188
End Page: 202
Journal / Book Title: Journal of Fluids and Structures
Volume: 58
Issue: 1
Copyright Statement: © 2015 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).
Sponsor/Funder: Engineering & Physical Science Research Council (EPSRC)
European Office Of Aerospace Research & Developmen
Funder's Grant Number: EP/J002070/1
FA8655-12-1-2046
Keywords: Aeroelastic control
Dielectric elastomers
Hyper-elastic materials
Low-Reynolds flows
Structural membranes
Maxwell stress
Science & Technology
Technology
Engineering, Mechanical
Mechanics
Engineering
Aeroelastic control
Dielectric elastomers
Hyper-elastic materials
Low-Reynolds flows
Structural membranes
Maxwell stress
ORDER
REDUCTION
Fluids & Plasmas
09 Engineering
Publication Status: Published
Online Publication Date: 2015-09-22
Appears in Collections:Aeronautics
Faculty of Engineering



This item is licensed under a Creative Commons License Creative Commons