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Curvilinear fiber optimization tools for aeroelastic design of composite wings

Haddadpour, H ; Sharif University of Technology | 2012

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  1. Type of Document: Article
  2. DOI: 10.1016/j.jfluidstructs.2012.05.008
  3. Publisher: Elsevier , 2012
  4. Abstract:
  5. The aeroelastic design of composite wings modeled as thin-walled beams is investigated through the use of curvilinear fiber. The structural model considers non-classical effects such as transverse shear, warping restraint, rotary inertia, nonuniform torsional model and also aerodynamic loads based on Wagner's function. In this paper, a linear spanwise variation of the fiber orientation resulting in a variable-stiffness structure is used to optimize the wing for maximum aeroelastic instability speed purpose, while manufacturing constraints are incorporated. Numerical results indicate improvements of aeroelastic stability of variable-stiffness wings over conventional, constant-stiffness ones
  6. Keywords:
  7. Aeroelastic instability speed ; Curvilinear fiber ; Thin walled composite beams ; Aeroelastic designs ; Aeroelastic instabilities ; Aeroelastic stability ; Manufacturing constraint ; Numerical results ; Optimization tools ; Rotary inertias ; Spanwise variations ; Structural models ; Thin-walled beam ; Thin-walled composite beam ; Torsional models ; Transverse shear ; Variable-stiffness ; Wagner's function ; Fibers ; Model structures ; Optimization ; Shear flow ; Stiffness ; Thin walled structures ; Wings ; Aeroelasticity
  8. Source: Journal of Fluids and Structures ; Volume 33 , 2012 , Pages 180-190 ; 08899746 (ISSN)
  9. URL: http://www.sciencedirect.com/science/article/pii/S0889974612001120