A modal strain energy approach to the prediction of resistively shunted piezoceramic damping

C. L. Davis, George A. Lesieutre

Research output: Contribution to journalArticle

86 Citations (Scopus)

Abstract

The use of piezoceramic materials with resistive shunting circuits has previously been shown to increase passive structural vibration damping. The ability to tailor the frequency dependence of damping is especially attractive when active linear time-invariant control of uncertain structures is to be attempted. A method for predicting the damping performance of resistively shunted piezoceramics based on a variation of the modal strain energy approach has recently been developed. Using this approach, the damping for a structural mode of vibration may be found as the product of the effective fraction of modal strain energy stored in the piezoceramic material, an effective piezoceramic material loss factor and a frequency shaping factor. A finite element model may be used to accurately determine the effective modal strain energy fraction; the effective material loss factor is closely related to the piezoceramic electromechanical coupling coefficient; and the frequency shaping factor results from the dynamics of the shunting circuit. Design concerns include the effect of stiff piezoceramic material on mode shapes, the frequency dependence of piezoceramic elastic properties, and the effect of adhesive on load transfer from the structure to the piezoceramic. Analytical and experimental results are presented for a uniform cantilevered beam with two pairs of resistively shunted piezoceramic plates. The results show good agreement between predicted and measured added damping.

Original languageEnglish (US)
Pages (from-to)129-139
Number of pages11
JournalJournal of Sound and Vibration
Volume184
Issue number1
DOIs
StatePublished - Jul 6 1995

Fingerprint

Strain energy
Damping
damping
predictions
Vibrations (mechanical)
vibration damping
structural vibration
energy
modal response
coupling coefficients
Electromechanical coupling
adhesives
Networks (circuits)
vibration mode
elastic properties
Adhesives
products

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Mechanics of Materials
  • Acoustics and Ultrasonics
  • Mechanical Engineering

Cite this

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abstract = "The use of piezoceramic materials with resistive shunting circuits has previously been shown to increase passive structural vibration damping. The ability to tailor the frequency dependence of damping is especially attractive when active linear time-invariant control of uncertain structures is to be attempted. A method for predicting the damping performance of resistively shunted piezoceramics based on a variation of the modal strain energy approach has recently been developed. Using this approach, the damping for a structural mode of vibration may be found as the product of the effective fraction of modal strain energy stored in the piezoceramic material, an effective piezoceramic material loss factor and a frequency shaping factor. A finite element model may be used to accurately determine the effective modal strain energy fraction; the effective material loss factor is closely related to the piezoceramic electromechanical coupling coefficient; and the frequency shaping factor results from the dynamics of the shunting circuit. Design concerns include the effect of stiff piezoceramic material on mode shapes, the frequency dependence of piezoceramic elastic properties, and the effect of adhesive on load transfer from the structure to the piezoceramic. Analytical and experimental results are presented for a uniform cantilevered beam with two pairs of resistively shunted piezoceramic plates. The results show good agreement between predicted and measured added damping.",
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A modal strain energy approach to the prediction of resistively shunted piezoceramic damping. / Davis, C. L.; Lesieutre, George A.

In: Journal of Sound and Vibration, Vol. 184, No. 1, 06.07.1995, p. 129-139.

Research output: Contribution to journalArticle

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