Multiple-mode structural vibration control using negative capacitive shunt damping
SCIE
SCOPUS
- Title
- Multiple-mode structural vibration control using negative capacitive shunt damping
- Authors
- Park, CH; Park, HC
- Date Issued
- 2003-11
- Publisher
- KOREAN SOC MECHANICAL ENGINEERS
- Abstract
- 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.
- Keywords
- vibration control; shunt circuit; negative capacitance; piezoelectric material; PIEZOELECTRIC MATERIALS; SUPPRESSION
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/18238
- DOI
- 10.1007/BF02983594
- ISSN
- 1226-4865
- Article Type
- Article
- Citation
- KSME INTERNATIONAL JOURNAL, vol. 17, no. 11, page. 1650 - 1658, 2003-11
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