期刊
EUROPEAN JOURNAL OF MECHANICS A-SOLIDS
卷 26, 期 4, 页码 676-687出版社
ELSEVIER
DOI: 10.1016/j.euromechsol.2006.10.002
关键词
bladed-disk; friction damping; nonlinear dynamics; harmonic balance method
类别
A damping strategy for blisks (integrally bladed disks) of turbomachinery involving a friction ring is investigated. These rings, located in grooves underside the wheel of the blisks, are held in contact by centrifugal loads and the energy is dissipated when relative motions between the ring and the disk occur. A representative lumped parameter model of the system is introduced and the steady-state nonlinear response is derived using a multi-harmonic balance method combined with an AFT procedure where the friction force is calculated in the time domain. Numerical simulations are presented for several damper characteristics and several excitation configurations. From these results, the performance of this damping strategy is discussed and some design guidelines are given. (c) 2006 Elsevier Masson SAS. All rights reserved.
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