0
TECHNICAL PAPERS

Method for Analysis of Nonlinear Multiharmonic Vibrations of Mistuned Bladed Disks With Scatter of Contact Interface Characteristics

[+] Author and Article Information
E. P. Petrov, D. J. Ewins

Centre of Vibration Engineering, Mechanical Engineering Department, Imperial College London, South Kensington Campus, London SW7 7AZ, UK

J. Turbomach 127(1), 128-136 (Feb 09, 2005) (9 pages) doi:10.1115/1.1812781 History: Received October 01, 2003; Revised March 01, 2004; Online February 09, 2005
Copyright © 2005 by ASME
Your Session has timed out. Please sign back in to continue.

References

Figures

Grahic Jump Location
Possible sources of mistuning analyzed: (a) scatter of shroud contacts, (b) individual blade mistuning, and (c) scatters in root contact and underplatform damper properties
Grahic Jump Location
A simplified model of the bladed disk
Grahic Jump Location
Forced responses for all blades of the model with gap-type nonlinearity: (a) a tuned case, and (b) the structure is mistuned by gap alternation
Grahic Jump Location
Forced responses for all blades of the model with friction dampers: a tuned case (a), and cases of the structure mistuned by scatters of the friction dampers’ stiffness (b) and normal load (c)
Grahic Jump Location
Blade forced responses for the bladed turbine disk mistuned by the normal load at the UPD: (a) comparison with limiting linear case, and (b) scatter of blade FRFs
Grahic Jump Location
Blade forced responses for the bladed turbine disk mistuned by stiffness of the UPD
Grahic Jump Location
Forced responses of the bladed turbine disk mistuned by shroud gaps: (a) FRFs for all blades, and (b) envelope of the FRFs and comparison with a tuned case
Grahic Jump Location
Maximum normalized amplitudes for each of the blades found over the first resonance frequency range
Grahic Jump Location
Maximum amplification factors for different kinds of blade and interface mistuning
Grahic Jump Location
Envelope of the maximum response levels of the bladed disk with frequency-mistuned blades and shroud contacts compared with the tuned responses

Tables

Errata

Discussions

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related Journal Articles
Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In