Flutter mitigation of turbofan blades using viscoelastic patches

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

Flutter mitigation of turbofan blades using viscoelastic patches

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

Mechanical And Aerospace Engineering

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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 language	English
Publication status	Published - 14 Sept 2022
Event	Proceedings 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 2022 → 14 Sept 2022

Conference

Conference	Proceedings of ISMA 2022 - International Conference on Noise and Vibration Engineering and USD 2022 - International Conference on Uncertainty in Structural Dynamics
Period	12/09/22 → 14/09/22

Keywords

propulsion systems
aerospace industry
turbofan
viscoelastic patches
finite element modeling

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Manayil-Santhosh-etal-ISMA-2022-Flutter-mitigation-of-turbofan-blades-using-viscoelastic-patchesAccepted author manuscript, 1.33 MBLicence: Strath_1

Cite this

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title = "Flutter mitigation of turbofan blades using viscoelastic patches",

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{\textregistered} 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. ",

keywords = "propulsion systems, aerospace industry, turbofan, viscoelastic patches, finite element modeling",

author = "{Manayil Santhosh}, B. and M. Tufekci and L. Salles and F. Scarpa and J. Yuan",

year = "2022",

month = sep,

day = "14",

language = "English",

note = "Proceedings of ISMA 2022 - International Conference on Noise and Vibration Engineering and USD 2022 - International Conference on Uncertainty in Structural Dynamics ; Conference date: 12-09-2022 Through 14-09-2022",

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TY - CONF

T1 - Flutter mitigation of turbofan blades using viscoelastic patches

AU - Manayil Santhosh, B.

AU - Tufekci, M.

AU - Salles, L.

AU - Scarpa, F.

AU - Yuan, J.

PY - 2022/9/14

Y1 - 2022/9/14

N2 - 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.

AB - 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.

KW - propulsion systems

KW - aerospace industry

KW - turbofan

KW - viscoelastic patches

KW - finite element modeling

M3 - Paper

T2 - Proceedings of ISMA 2022 - International Conference on Noise and Vibration Engineering and USD 2022 - International Conference on Uncertainty in Structural Dynamics

Y2 - 12 September 2022 through 14 September 2022

ER -

Flutter mitigation of turbofan blades using viscoelastic patches

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Keywords

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