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On Forced Response of a Rotating Integrally Bladed Disk: Predictions and Experiments

[+] Author Affiliations
Claude Gibert, Vsevolod Kharyton, Fabrice Thouverez

Ecole Centrale de Lyon, Ecully, France

Pierrick Jean

Snecma - SAFRAN Group, Moissy Cramayel, France

Paper No. GT2010-23610, pp. 1103-1116; 14 pages
doi:10.1115/GT2010-23610
From:
  • ASME Turbo Expo 2010: Power for Land, Sea, and Air
  • Volume 6: Structures and Dynamics, Parts A and B
  • Glasgow, UK, June 14–18, 2010
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 978-0-7918-4401-4 | eISBN: 978-0-7918-3872-3
  • Copyright © 2010 by ASME

abstract

An experimental setup is described which permits to rotate a bladed disk in vacuum and to measure its dynamic response to excitations provided by some embedded piezoelectric actuators. A particular spatial placement of actuators associated with phase-shifting electronic circuits is set for simulating travelling wave excitations with respect to the rotating frame. The system is demonstrated on an actual high-pressure compressor (HCP) integrally bladed disk. The dynamic response of the blisk is analyzed experimentally and results are correlated with those obtained from a simplified finite elements model taking into account Coriolis effect. The paper focuses on the influence of the latter which is most of the time neglected and its implication on the forced response levels is studied into two situations without or with mistuning.

Copyright © 2010 by ASME
Topics: Disks

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