Uncertainty quantification in aeroelastic composite structures using lamination parameters

Carl Scarth*, Jonathan E. Cooper, Paul M. Weaver, Gustavo H C Silva

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference Contribution (Conference Proceeding)

3 Citations (Scopus)

Abstract

An approach for modelling the aeroelastic response of composite laminate structures subject to uncertainty in the ply orientations is introduced. An aeroelastic model is constructed using the Rayleigh-Ritz technique coupled with strip theory aerodynamics. Lamination parameters are used to represent uncertainties in composite layup, and are propagated through the aeroelastic model using Polynomial Chaos Expansion (PCE). The lamination parameter Probability Density Functions (PDFs) are first de-correlated using the Rosenblatt transformation. The use of lamination parameters keeps the dimension of the problem low for any symmetric composite laminate with any number of plies. Results are presented for a number of example laminates. The PCE technique was able to accurately emulate the response PDF with an order of magnitude saving in computational effort compared to the baseline MCS results.

Original languageEnglish
Title of host publicationIFASD 2013 - International Forum on Aeroelasticity and Structural Dynamics
PublisherRoyal Aeronautical Society
Publication statusPublished - 1 Jan 2013
EventInternational Forum on Aeroelasticity and Structural Dynamics, IFASD 2013 - Bristol, United Kingdom
Duration: 24 Jun 201327 Jun 2013

Conference

ConferenceInternational Forum on Aeroelasticity and Structural Dynamics, IFASD 2013
CountryUnited Kingdom
CityBristol
Period24/06/1327/06/13

Keywords

  • Aeroelasticity
  • Composites
  • Lamination Parameters
  • Polynomial Chaos Expansion
  • Uncertainty

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