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Internal Friction And Instabilities Of RotorsReport describes study of effects of internal friction on dynamics of rotors prompted by concern over instabilities in rotors of turbomachines. Theoretical and experimental studies described. Theoretical involved development of nonlinear mathematical models of internal friction in three joints found in turbomachinery - axial splines, Curvic(TM) splines, and interference fits between smooth cylindrical surfaces. Experimental included traction tests to determine the coefficients of friction of rotor alloys at various temperatures, bending-mode-vibration tests of shafts equipped with various joints and rotordynamic tests of shafts with axial-spline and interference-fit joints.
Document ID
19920000379
Document Type
Other - NASA Tech Brief
Authors
Walton, J.
(NASA Marshall Space Flight Center, Huntsville, AL.)
Artiles, A.
(NASA Marshall Space Flight Center, Huntsville, AL.)
Lund, J.
(NASA Marshall Space Flight Center, Huntsville, AL.)
Dill, J.
(NASA Marshall Space Flight Center, Huntsville, AL.)
Zorzi, E.
(NASA Marshall Space Flight Center, Huntsville, AL.)
Date Acquired
August 15, 2013
Publication Date
June 1, 1992
Publication Information
Publication: NASA Tech Briefs
Volume: 16
Issue: 6
ISSN: 0145-319X
Subject Category
Machinery
Report/Patent Number
MFS-27246
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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