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Nonsynchronous vibrations observed in a supercritical power transmission shaftA flexible shaft is prone to a number of vibration phenomena which occur at frequencies other than synchronous with rotational speed. Nonsynchronous vibrations from several sources were observed while running a test rig designed to simulate the operation of a supercritical power transmission shaft. The test rig was run first with very light external damping and then with a higher level of external damping, for comparison. As a result, the effect of external damping on the nonsynchronous vibrations of the test rig was observed. All of these nonsynchronous vibrations were of significant amplitude. Their presence in the vibrations spectra for a supercritical power transmission shaft at various speeds in the operating range indicates that very careful attention to all of the vibration spectra should be made in any supercritical power transmission shafting. This paper presents a review of the analysis performed and a comparison with experimental data. A thorough discussion of the observed nonsynchronous whirl is also provided.
Document ID
19790048399
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Darlow, M. S.
(Mechanical Technology, Inc. Latham, NY, United States)
Zorzi, E. S.
(Mechanical Technology, Inc. Latham, N.Y., United States)
Date Acquired
August 9, 2013
Publication Date
March 1, 1979
Subject Category
Mechanical Engineering
Report/Patent Number
ASME PAPER 79-GT-146
Meeting Information
Meeting: American Society of Mechanical Engineers, Gas Turbine Conference and Exhibit and Solar Energy Conference
Location: San Diego, CA
Start Date: March 12, 1979
End Date: March 15, 1979
Sponsors: American Society of Mechanical Engineers
Accession Number
79A32412
Funding Number(s)
CONTRACT_GRANT: NAS3-16824
Distribution Limits
Public
Copyright
Other

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