Flutter mitigation of turbofan blades using viscoelastic patches

B. Manayil Santhosh, M. Tufekci, L. Salles, F. Scarpa, J. Yuan

Research output: Contribution to conferencePaper

29 Downloads (Pure)

Abstract

Flutter as a self-feeding aeroelastic instability presents one of the biggest challenges in aero-engine designsto improve its aerodynamic and structural performance. This work presents a detailed feasibility study ofusing different viscoelastic patches as Constrained Layer Damping (CLD) enhancement for an aero-enginefan blade to reduce potential flutter risks. The static and dynamic responses of the different materials andconfigurations (thicknesses, layers and locations) are evaluated on both cruise and take-off/landingconditions. It is found that a double bi-layer 3M® ISD110 is the optimal choice of material for the CLDtreatment for the fan blade. The study also shows that an optimal CLD treatment of 15 % total surface areaof the blade at the root demonstrated a 36 % reduction in resonance amplitudes across the first six modes.
Original languageEnglish
Publication statusPublished - 14 Sept 2022
EventProceedings of ISMA 2022 - International Conference on Noise and Vibration Engineering and USD 2022 - International Conference on Uncertainty in Structural Dynamics - Leuven Belgium
Duration: 12 Sept 202214 Sept 2022

Conference

ConferenceProceedings of ISMA 2022 - International Conference on Noise and Vibration Engineering and USD 2022 - International Conference on Uncertainty in Structural Dynamics
Period12/09/2214/09/22

Keywords

  • propulsion systems
  • aerospace industry
  • turbofan
  • viscoelastic patches
  • finite element modeling

Fingerprint

Dive into the research topics of 'Flutter mitigation of turbofan blades using viscoelastic patches'. Together they form a unique fingerprint.

Cite this