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Piezoelectric Vibration Damping Study for Rotating Composite Fan BladesResonant vibrations of aircraft engine blades cause blade fatigue problems in engines, which can lead to thicker and aerodynamically lower performing blade designs, increasing engine weight, fuel burn, and maintenance costs. In order to mitigate undesirable blade vibration levels, active piezoelectric vibration control has been investigated, potentially enabling thinner blade designs for higher performing blades and minimizing blade fatigue problems. While the piezoelectric damping idea has been investigated by other researchers over the years, very little study has been done including rotational effects. The present study attempts to fill this void. The particular objectives of this study were: (a) to develop and analyze a multiphysics piezoelectric finite element composite blade model for harmonic forced vibration response analysis coupled with a tuned RLC circuit for rotating engine blade conditions, (b) to validate a numerical model with experimental test data, and (c) to achieve a cost-effective numerical modeling capability which enables simulation of rotating blades within the NASA Glenn Research Center (GRC) Dynamic Spin Rig Facility. A numerical and experimental study for rotating piezoelectric composite subscale fan blades was performed. It was also proved that the proposed numerical method is feasible and effective when applied to the rotating blade base excitation model. The experimental test and multiphysics finite element modeling technique described in this paper show that piezoelectric vibration damping can significantly reduce vibrations of aircraft engine composite fan blades.
Document ID
20120013823
Acquisition Source
Glenn Research Center
Document Type
Technical Memorandum (TM)
Authors
Min, James B. (NASA Glenn Research Center Cleveland, OH, United States)
Duffy, Kirsten P. (Toledo Univ. Toledo, OH, United States)
Choi, Benjamin B. (NASA Glenn Research Center Cleveland, OH, United States)
Provenza, Andrew J. (NASA Glenn Research Center Cleveland, OH, United States)
Kray, Nicholas (General Electric Aviation Cincinnati, OH, United States)
Date Acquired
August 26, 2013
Publication Date
August 1, 2012
Subject Category
Structural Mechanics
Report/Patent Number
NASA/TM-2012-217648
E-18326
Meeting Information
Meeting: 2012 AIAA Structures Structural Dvnamics and Materials (SDM) Conference
Location: Honololo, HI
Country: United States
Start Date: April 23, 2012
End Date: April 26, 2012
Sponsors: American Inst. of Aeronautics and Astronautics
Funding Number(s)
WBS: WBS 561581.02.08.03.43.04.04
Distribution Limits
Public
Copyright
Public Use Permitted.

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