Nonlinear modal analysis of frictional ring damper for compressor blisk
Nonlinear modal analysis of frictional ring damper for compressor blisk
The use of integrally blisk is becoming popular because of the advantages in aerodynamic efficiency and mass reduction. However, in an integrally blisk, the lack of the contact interface leads to a low structural damping compared to an assembled bladed disk. One emerging damping technique for the integrally blisk is based on the use of friction ring damper, which exploits the contact interfaces at the underneath of the disk. In this paper, three different geometries of the ring dampers are investigated for damping enhancement of a blisk. A full-scale compressor blisk is considered as a case study where a node-to-node contact model is used to compute the contact forces. The dynamic behavior of the blisk with the ring damper is investigated by using nonlinear modal analysis, which allows a direct estimation of the damping generated by the friction interface. The damping performance for the different ring dampers is evaluated and compared. It appears that the damping efficiency as well as the shift in the resonant frequency for the different geometries is highly related to the nodal diameter and contact pressure/gap distributed within contact interface. The geometry of the ring damper has significant impact on the damping performance.
Sun, Yekai
181c2a74-70e7-40ba-a016-664fb87dd74f
Yuan, Jie
4bcf9ce8-3af4-4009-9cd0-067521894797
Denimal, Enora
49fe7e8d-c02b-4ebe-b126-4ca1000c939d
Salles, Loïc
7c9f2690-2631-4f32-9c2f-07659cf3f19c
31 March 2021
Sun, Yekai
181c2a74-70e7-40ba-a016-664fb87dd74f
Yuan, Jie
4bcf9ce8-3af4-4009-9cd0-067521894797
Denimal, Enora
49fe7e8d-c02b-4ebe-b126-4ca1000c939d
Salles, Loïc
7c9f2690-2631-4f32-9c2f-07659cf3f19c
Sun, Yekai, Yuan, Jie, Denimal, Enora and Salles, Loïc
(2021)
Nonlinear modal analysis of frictional ring damper for compressor blisk.
Journal of Engineering for Gas Turbines and Power, 143 (3).
(doi:10.1115/1.4049761).
Abstract
The use of integrally blisk is becoming popular because of the advantages in aerodynamic efficiency and mass reduction. However, in an integrally blisk, the lack of the contact interface leads to a low structural damping compared to an assembled bladed disk. One emerging damping technique for the integrally blisk is based on the use of friction ring damper, which exploits the contact interfaces at the underneath of the disk. In this paper, three different geometries of the ring dampers are investigated for damping enhancement of a blisk. A full-scale compressor blisk is considered as a case study where a node-to-node contact model is used to compute the contact forces. The dynamic behavior of the blisk with the ring damper is investigated by using nonlinear modal analysis, which allows a direct estimation of the damping generated by the friction interface. The damping performance for the different ring dampers is evaluated and compared. It appears that the damping efficiency as well as the shift in the resonant frequency for the different geometries is highly related to the nodal diameter and contact pressure/gap distributed within contact interface. The geometry of the ring damper has significant impact on the damping performance.
Text
Sun_etal_JEGTP_2021_Nonlinear_modal_analysis_of_frictional_ring_damper_for_compressor_blisk
- Accepted Manuscript
More information
e-pub ahead of print date: 8 February 2021
Published date: 31 March 2021
Identifiers
Local EPrints ID: 479304
URI: http://eprints.soton.ac.uk/id/eprint/479304
ISSN: 0742-4795
PURE UUID: e8b50704-ae95-4b43-b052-78ac81404d99
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Date deposited: 20 Jul 2023 16:54
Last modified: 17 Mar 2024 04:20
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Author:
Yekai Sun
Author:
Jie Yuan
Author:
Enora Denimal
Author:
Loïc Salles
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