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Proceedings Paper

Active and passive vibration confinement using piezoelectric transducers and dynamic vibration absorbers
Author(s): Lawrence R. Corr; William W. Clark
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Paper Abstract

In this paper, a numerical simulation is presented that shows active and passive vibration confinement of a pinned- pinned beam. The beam is divided into three regions: an isolated, a transition, and a localized region. Two dynamic vibration absorbers are used in conjunction with two pairs of piezoelectric transducers with a feedback law to reduce the displacement amplitudes in the isolated region and to confine the vibrations to the localized region. The development of an eigenvector shaping technique is also shown. This technique shapes the eigenvectors of the uncontrolled beam to confine vibrations to the localized region. Finally, the numerical results of a randomly forced and a harmonically forced controlled pinned-pinned beam are presented. These results show that the combination of active and passive vibration confinement reduces the total power required for active vibration confinement and demonstrate that piezoelectric transducers are viable actuators for vibration confinement applications.

Paper Details

Date Published: 9 June 1999
PDF: 12 pages
Proc. SPIE 3668, Smart Structures and Materials 1999: Smart Structures and Integrated Systems, (9 June 1999); doi: 10.1117/12.350750
Show Author Affiliations
Lawrence R. Corr, Univ. of Pittsburgh (United States)
William W. Clark, Univ. of Pittsburgh (United States)


Published in SPIE Proceedings Vol. 3668:
Smart Structures and Materials 1999: Smart Structures and Integrated Systems
Norman M. Wereley, Editor(s)

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