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Nonlinear Dynamics

, Volume 96, Issue 4, pp 2257–2279 | Cite as

Effect of fast parametric excitation on the instability behaviour of a spinning disc bounded in a compressible fluid-filled enclosure

  • W. Dheelibun Remigius
  • Sayan Gupta
  • Sunetra SarkarEmail author
Original Paper
  • 160 Downloads

Abstract

This paper focusses on investigating how high-frequency (fast) excitations affect the aeroelastic instability of a spinning disc immersed in a compressible fluid-filled enclosure. The method of multiple scales is used to recast the governing equations of motion into separate equations for fast and slow motions. The slow motions represent the dynamic behaviour of the non-autonomous coupled system. The stability boundaries of the coupled system are investigated through a bifurcation analysis with respect to the mean disc rotation speed and the forcing amplitude. The study reveals that an increase in the forcing amplitude of the fast parametric excitation results in a corresponding increase in the frequencies and the critical speeds of the coupled disc modes associated with the slow motions. Moreover, it is shown that the aeroelastic stability can be postponed or suppressed due to the stiffening and gyroscopic effects induced by the fast excitations.

Keywords

Accelerating disc Fluid-filled enclosure Acousto-elastic interaction Fast parametric excitation Hopf bifurcation 

Notes

Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflict of interest.

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Copyright information

© Springer Nature B.V. 2019

Authors and Affiliations

  1. 1.Department of Aerospace EngineeringIndian Institute of Technology MadrasChennaiIndia
  2. 2.Department of Applied MechanicsIndian Institute of Technology MadrasChennaiIndia

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