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A New Method for Predicting Critical Speeds in Rotordynamics

Publication ,  Journal Article
Virgin, LN; Knight, JD; Plaut, RH
Published in: Journal of Engineering for Gas Turbines and Power
February 1, 2016

The prediction of critical speeds of a rotating shaft is a crucial issue in a variety of industrial applications ranging from turbomachinery to disk storage systems. The modeling and analysis of rotordynamic systems is subject to a number of complications, but perhaps the most important characteristic is to pass through a critical speed under spin-up conditions. This is associated with classical resonance phenomena and high amplitudes, and is often a highly undesirable situation. However, given uncertainties in the modeling of such systems, it can be very difficult to predict critical speeds based on purely theoretical considerations. Thus, it is clearly useful to gain knowledge of the critical speeds of rotordynamic systems under in situ conditions. The present study describes a relatively simple method to predict the first critical speed using data from low rotational speeds. The method is shown to work well for two standard rotordynamic models, and with data from experiments conducted during this study.

Duke Scholars

Published In

Journal of Engineering for Gas Turbines and Power

DOI

EISSN

1528-8919

ISSN

0742-4795

Publication Date

February 1, 2016

Volume

138

Issue

2

Related Subject Headings

  • Energy
  • 4004 Chemical engineering
  • 4001 Aerospace engineering
  • 0913 Mechanical Engineering
  • 0901 Aerospace Engineering
 

Citation

APA
Chicago
ICMJE
MLA
NLM
Virgin, L. N., Knight, J. D., & Plaut, R. H. (2016). A New Method for Predicting Critical Speeds in Rotordynamics. Journal of Engineering for Gas Turbines and Power, 138(2). https://doi.org/10.1115/1.4031308
Virgin, L. N., J. D. Knight, and R. H. Plaut. “A New Method for Predicting Critical Speeds in Rotordynamics.” Journal of Engineering for Gas Turbines and Power 138, no. 2 (February 1, 2016). https://doi.org/10.1115/1.4031308.
Virgin LN, Knight JD, Plaut RH. A New Method for Predicting Critical Speeds in Rotordynamics. Journal of Engineering for Gas Turbines and Power. 2016 Feb 1;138(2).
Virgin, L. N., et al. “A New Method for Predicting Critical Speeds in Rotordynamics.” Journal of Engineering for Gas Turbines and Power, vol. 138, no. 2, Feb. 2016. Scopus, doi:10.1115/1.4031308.
Virgin LN, Knight JD, Plaut RH. A New Method for Predicting Critical Speeds in Rotordynamics. Journal of Engineering for Gas Turbines and Power. 2016 Feb 1;138(2).

Published In

Journal of Engineering for Gas Turbines and Power

DOI

EISSN

1528-8919

ISSN

0742-4795

Publication Date

February 1, 2016

Volume

138

Issue

2

Related Subject Headings

  • Energy
  • 4004 Chemical engineering
  • 4001 Aerospace engineering
  • 0913 Mechanical Engineering
  • 0901 Aerospace Engineering