Vibration Qualification Test of an Aircraft Piccolo Tube Using Multiple-Input-Multiple-Output Control Technology

Vorst, Raphaël Van der; Magerman, Jean Louis; Bernay, Bruno; Vandenberk, Swen; Carrella, A.

doi:10.4271/2013-01-2315

Cited by 1 publication

(1 citation statement)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…During the flight, they are hence exposed to a wide range of temperatures, resulting in substantial changes in their dimensions due to thermal expansion. These variations create clearances between the tube and its support and cause the overall system to exhibit nonlinear behavior due to impacts and friction [1]. Linear FE models have proved to be insufficient to reproduce the experimentally observed dynamics of the tube.…”

Section: Introductionmentioning

confidence: 99%

Nonlinearities of an Aircraft Piccolo Tube: Identification and Modeling

Dossogne

Trillet

Schoukens

et al. 2018

Model Validation and Uncertainty Quantification, Volume 3

View full text Add to dashboard Cite

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.

show abstract

Section: Introductionmentioning

confidence: 99%