Aeroelastic tailoring of a plate wing with functionally graded materials

Peter D. Dunning, Bret K. Stanford, H. Alicia Kim, Christine V. Jutte

Research output: Contribution to journalArticlepeer-review

16 Citations (Scopus)
157 Downloads (Pure)

Abstract

A functionally graded material (FGM) provides a spatial blend of material properties throughout a structure. This paper studies the efficacy of FGM for the aeroelastic tailoring of a metallic cantilever plate-like wing, wherein a genetic algorithm provides Pareto trade-off curves between static and dynamic aeroelastic metrics. A key comparison is between the effectiveness of material grading, geometric grading (i.e. plate thickness variations), and using both simultaneously. The introduction of material grading does, in some cases, improve the aeroelastic performance. This improvement, and the physical mechanism upon which it is based, depends on numerous factors: the two sets of metallic material parameters used for grading; the sweep of the plate; the aspect ratio of the plate; and whether the material is graded continuously or discretely.

Original languageEnglish
Pages (from-to)292-312
Number of pages21
JournalJournal of Fluids and Structures
Volume51
Early online date23 Oct 2014
DOIs
Publication statusPublished - Nov 2014

Keywords

  • Aeroelastic tailoring
  • Doublet Lattice Method
  • Flutter
  • Functionally graded materials
  • Genetic algorithm
  • Plate wing

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