BLADE EXCITATION DUE TO GYROSCOPIC FORCES.

F. Sisto, A. T. Chang, M. Sutcu

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

A turboblade mounted on a spinning and precessing rotor is modelled as a uniform cantilever beam (with bending in one plane) with the objective of efficiently conducting parametric studies. The effect that is considered is the response due to a harmonic variation with time of the precessional rate such as is attributable to whirling, seismic ground motion, or other periodic disturbances acting upon mounts of the axial turbomachine. The results are presented in the form of (self-excited) instability criteria. The effects of viscous damping and negative damping (rate of growth) of the unstable vibration are also studied for the case of a constant (nonharmonic) precession rate.

Original languageEnglish
Pages (from-to)279-284
Number of pages6
JournalEnergia Elettrica
Volume59
Issue number10
StatePublished - 1982

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