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Rotor internal friction instabilityTwo aspects of internal friction affecting stability of rotating machines are discussed. The first role of internal friction consists of decreasing the level of effective damping during rotor subsynchronous and backward precessional vibrations caused by some other instability mechanisms. The second role of internal frication consists of creating rotor instability, i.e., causing self-excited subsynchronous vibrations. Experimental test results document both of these aspects.
Document ID
19860020715
Document Type
Conference Paper
Authors
Bently, D. E. (Bently Rotor Dynamics Research Corp. Minden, NV, United States)
Muszynska, A. (Bently Rotor Dynamics Research Corp. Minden, NV, United States)
Date Acquired
August 12, 2013
Publication Date
December 1, 1985
Publication Information
Publication: NASA. Lewis Research Center Instability in Rotating Machinery
Subject Category
MECHANICAL ENGINEERING
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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