Multiple-Mode Structural Vibration Control Using Negative Capacitive Shunt Damping

This paper deals with a novel shunt circuit, which is capable of suppressing multimode vibration amplitudes by using a pair of piezoceramic patches. In order to describe the characteristic behaviors of a piezoelectric damper connected with a series and a parallel resistor-negative capacitor branch c...

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Bibliographic Details
Published in:Journal of mechanical science and technology 2003, 17(11), , pp.1650-1658
Main Authors: Park, Chul Hue, Park, Hyun Chul
Format: Article
Language:English
Subjects:
Amplitudes
Bypasses
Capacitors
Circuits
Dampers
Damping
Equations of motion
Exact sciences and technology
Fracture mechanics (crack, fatigue, damage...)
Fracture mechanics, fatigue and cracks
Frequency ranges
Fundamental areas of phenomenology (including applications)
Mathematical models
Physics
Piezoelectricity
Resistors
Shunts
Solid mechanics
Stiffness
Structural and continuum mechanics
Structural vibration
Studies
Vibration
Vibration control
기계공학
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Summary:This paper deals with a novel shunt circuit, which is capable of suppressing multimode vibration amplitudes by using a pair of piezoceramic patches. In order to describe the characteristic behaviors of a piezoelectric damper connected with a series and a parallel resistor-negative capacitor branch circuit, the stiffness ratio and loss factor with respect to the non-dimensional frequency are considered. The mechanism of the shunt damper is also described by considering a shunt voltage constrained by shunt impedance. To obtain a guideline model of the piezo/beam system with a negative capacitive shunting, the governing equations of motion are derived through the Hamilton' s principle and a piezo sensor equation as well as a shunt-damping matrix is developed. The theoretical analysis shows that the piezo/beam system combined with a series and a parallel resistor-negative capacitor branch circuit developed in this study can significantly reduce the multiple-mode vibration amplitudes over the whole structural frequency range.[PUBLICATION ABSTRACT]
ISSN:1738-494X
1226-4865
1976-3824
DOI:10.1007/BF02983594