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Vibrations of twisted rotating bladesThe literature dealing with vibrations of turbomachinery blades is voluminous, but the vast majority of it treats the blades as beams. In a previous paper a two-dimensional analytical procedure was developed and demonstrated on simple models of blades having camber. The procedure utilizes shallow shell theory along with the classical Ritz method for solving the vibration problem. Displacement functions are taken as algebraic polynomials. In the present paper the method is demonstrated on blade models having camber. Comparisons are first made with results in the literature for nonrotating twisted plates and various disagreements between results are pointed out. A method for depicting mode shape information is demonstrated, permitting one to examine all three components of displacement. Finally, the analytical procedure is demonstrated on rotating twisted blade modes, both without and with camber.
Document ID
19820035806
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Leissa, A. W.
(Ohio State Univ. Columbus, OH, United States)
Lee, J. K.
(Ohio State University Columbus, OH, United States)
Wang, A. J.
(Ohio State Univ. Columbus, OH, United States)
Date Acquired
August 10, 2013
Publication Date
September 1, 1981
Subject Category
Structural Mechanics
Report/Patent Number
ASME PAPER 81-DET-127
Accession Number
82A19341
Funding Number(s)
CONTRACT_GRANT: NAG3-36
Distribution Limits
Public
Copyright
Other

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