ACTUATOR 2014 Manuscript C2.1


Author: Hubert Borgmann
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Pages: 4
Language: English
Publication date: 09/04/2015
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Manuscript C2.1 published in Conference Proceedings ACTUATOR 2014
Passive Damping of Rotationally Periodic Structures with Tuned Piezoelectric Shunts

B. Mokrani1, R Bastaits1, M. Horodinca2, I. Burda3, I. Romanescu2, A. Preumont1
1Université Libre de Bruxelles, Belgium,
2Technical University Gheorghe Asachi, Iasi, Romania
3Babes Bolyai University, Cluj-Napoca, Romania

Abstract:
This paper considers the RL shunt damping of rotationally periodic structures with an array of regularly spaced piezoelectric patches. The objective is to simplify the hardware, by reducing the demand on the inductors (and possibly eliminating the use of synthetic inductors). The paper compares two different ways of using the PZT array: independent loops and parallel loops. It is shown that, if a specific mode with n nodal diameters is targeted, mounting 4n PZT patches in two parallel loops is as efficient as mounting them in independent loops, while reducing considerably the demand on the inductors L in the circuits (by 2n^2). The strategy is first developed numerically and confirmed experimentally on a circular plate. The positive results reported in this paper open new possibilities in damping turbo machinery.
El vendedor asume toda la responsabilidad de esta entrada.
Hubert Borgmann, MESSE BREMEN,
Project Manager ACTUATOR, International Conference and Exhibition on New Actuators and Drive Systems, Bremen, Germany, and Editor of the ACTUATOR Conference Proceedings (www.actuator.de)
Project Manager ITHEC, International Conference and Exhibition on Thermoplastic Composites, Bremen, Germany, and Editor of the ITHEC Conference Proceedings (www.ithec.de)

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