Nonlinearities of an aircraft piccolo tube: Identification and modeling

T. Dossogne, P. Trillet, M. Schoukens, B. Bernay, J.P. Noël, G. Kerschen

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

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Abstract

Piccolo tubes are parts of aircraft wings anti-icing system and consist of titanium pipes inserted into the internal structure of the slat. Due to differential thermal expansion, clearances between the tube and its support are unavoidable and cause the overall system to exhibit highly nonlinear behavior, resulting from impacts and friction. This paper addresses the identification and modeling of the nonlinearities present in the slat-Piccolo tube connection. The complete identification procedure, from nonlinearity detection and characterization to parameter estimation, is carried out based upon sine-sweep measurements. The use of several techniques, such as the acceleration surface method, enables to understand the complex dynamics of the Piccolo tube and build a reliable model of its nonlinearities. In particular, the parameters of nonsmooth nonlinear stiffness and damping mechanisms are estimated. The nonlinear model is finally validated on standard qualification tests for airborne equipments.
Original languageEnglish
Title of host publicationModel Validation and Uncertainty Quantification - Proceedings of the 36th IMAC, A Conference and Exposition on Structural Dynamics 2018
Subtitle of host publicationProceedings of the 36th IMAC, A Conference and Exposition on Structural Dynamics 2018
EditorsRobert Barthorpe
Place of PublicationCham
PublisherSpringer
Pages57-59
Number of pages3
Volume3
ISBN (Electronic)978-3-319-74793-4
ISBN (Print)978-3-319-74792-7
DOIs
Publication statusPublished - 2019
Event36th IMAC, A Conference and Exposition on Structural Dynamics, 2018 - Orlando, United States
Duration: 12 Feb 201815 Feb 2018

Publication series

NameConference Proceedings of the Society for Experimental Mechanics Series
ISSN (Print)2191-5644
ISSN (Electronic)2191-5652

Conference

Conference36th IMAC, A Conference and Exposition on Structural Dynamics, 2018
CountryUnited States
CityOrlando
Period12/02/1815/02/18

Keywords

  • Acceleration surface method (ASM)
  • Aircraft anti-icing system
  • Contact force model
  • Finite element model updating
  • Finite element model upgrading
  • Nonlinear system identification
  • Piccolo tube
  • Vibroimpact

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