Characterization of control surface freeplay with nonstationary aerodynamic loading via the hilbert-huang transform

Michael Candon, Robert Carresey, Nish Joseph, Hideaki Ogawa, Pier Marzocca

研究成果: 書籍/レポート タイプへの寄稿会議への寄与

抄録

The Hilbert-Huang Transform is used to analyze the nonlinear aeroelastic response of a 2D 3DOF aeroelastic airfoil system with control surface freeplay under transonic flow conditions. Both static aerodynamic condition and dynamic aerodynamic condition, that is for accelerating freestream speed, are considered using a linearized aerodynamic model. The main aim of this paper is to provide physical insights as to the observed transition between periodic and aperiodic behavior, and the presence of a stable periodic region well below the region characterized by stable limit cycles. Physical insights towards this transition are presented by showing that multiple internal resonances exist. It is shown that the abrupt transition from aperiodic / chaotic to periodic behavior is a result of multiple internal resonances between linear and nonlinear modes. Initially a 2:1 IR between linear modes leads to a shift in the frequency composition and dynamic behavior of the system, then immediately a secondary 2:1 IR occurs between of linear and nonlinear modes which drives a stable periodic region.

本文言語英語
ホスト出版物のタイトルAIAA/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials
出版社American Institute of Aeronautics and Astronautics Inc, AIAA
210049
ISBN(印刷版)9781624105326
DOI
出版ステータス出版済み - 2018
外部発表はい
イベントAIAA/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference, 2018 - Kissimmee, 米国
継続期間: 1月 8 20181月 12 2018

出版物シリーズ

名前AIAA/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference, 2018
番号210049
0

会議

会議AIAA/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference, 2018
国/地域米国
CityKissimmee
Period1/8/181/12/18

!!!All Science Journal Classification (ASJC) codes

  • 土木構造工学
  • 建築および建設
  • 材料力学
  • 建築

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