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Passively Damped Laminated Piezoelectric Shell Structures with Integrated Electric NetworksMulti-field mechanics are presented for curvilinear piezoelectric laminates interfaced with distributed passive electric components. The equations of motion for laminated piezoelectric shell structures with embedded passive electric networks are directly formulated and solved using a finite element methodology. The modal damping and frequencies of the piezoelectric shell are calculated from the poles of the system. Experimental and numerical results are presented for the modal damping and frequency of composite beams with a resistively shunted piezoceramic patch. The modal damping and frequency of plates, cylindrical shells and cylindrical composite blades with piezoelectric-resistor layers are predicted. Both analytical and experimental studies illustrate a unique dependence of modal damping and frequencies on the shunting resistance and show the effect of structural shape and curvature on piezoelectric damping.
Document ID
19990052892
Acquisition Source
Glenn Research Center
Document Type
Contractor Report (CR)
Authors
Saravanos, Dimitris A. (Ohio Aerospace Inst. Cleveland, OH United States)
Date Acquired
September 6, 2013
Publication Date
March 1, 1999
Subject Category
Structural Mechanics
Report/Patent Number
NAS 1.26:208871
E-11515
NASA/CR-1999-208871
Funding Number(s)
CONTRACT_GRANT: NCC3-455
PROJECT: RTOP 523-21-13
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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