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Tuning of a vibration absorber with shunted piezoelectric transducers

 
: Heuss, Oliver; Salloum, R.; Mayer, D.

Twiefel, J. ; Leibniz Universität Hannover, Institut für Dynamik und Schwingungen:
10th International Workshop on Piezoelectric Materials and Applications and 8th Energy Harvesting Workshop 2013. Proceedings : Hannover, July 14th - July 17th, 2013
Garbsen: PZH Verlag, 2013 (Berichte aus dem IDS 2013,5)
ISBN: 978-3-944586-10-6
S.217-219
International Workshop on Piezoelectric Materials and Applications (IWPMA) <10, 2013, Hannover>
Energy Harvesting Workshop (EHW) <8, 2013, Hannover>
Englisch
Konferenzbeitrag
Fraunhofer LBF ()
piezoelectric; vibration absorber

Abstract
In order to reduce structural vibrations in narrow frequency bands, tuned mass absorbers can be an appropriate measure. A quite similar approach which makes use of applied piezoelectric elements, instead of additional oscillating masses, are the well-known resonant shunts, consisting of resistances, inductances and maybe negative capacitances connected to the piezoelectric element. This paper presents a combined approach which is based on a conventional tuned mass absorber, but whose characteristics can be strongly influenced by applying shunted piezoceramics. Thus the tuning frequency of the absorber can be adapted to the excitation frequency, without the need of much actuation power and the damping characteristics of the absorber can be changed.

: http://publica.fraunhofer.de/dokumente/N-272148.html