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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Self-Tuning Multimodal Piezoelectric Shunt Damping

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Author(s):
Goldstein, Andre L. [1, 2]
Total Authors: 1
Affiliation:
[1] State Univ Campinas UNICAMP, Sch Mech Engn, Dept Computat Mech DMC, BR-13083970 Campinas, SP - Brazil
[2] Virginia Tech Univ, Vibrat & Acoust Lab, Blacksburg, VA - USA
Total Affiliations: 2
Document type: Journal article
Source: Journal of the Brazilian Society of Mechanical Sciences and Engineering; v. 33, n. 4, p. 428-436, OCT-DEC 2011.
Web of Science Citations: 1
Abstract

Piezoelectric shunt damping is a well known structural vibration control technique that consists in connecting an electrical circuit to a piezoelectric transducer attached to the structure. In the case of a resonant shunt, the network consisting of an inductor-resistor network when combined with the capacitive nature of the piezoelectric transducer impedance can be designed to act as a tuned vibration absorber. This paper discusses a method for the design and online adaptation of multimodal piezoelectric resonant shunts. The method presented in this work is different from previously multi-modal shunting methods ({''}current blocking{''} and ``current flowing{''}) and implements the shunting network with a reduced number of discrete electrical components besides allowing for online tuning of the shunting parameters. The mathematical model of a structure with bonded piezoelectric transducers connected to a general electrical network is reviewed and the coupled equations of motion of a simply supported beam with piezoelectric elements and passive shunt networks are derived. The design of the multimodal shunt network is presented based on passive filter synthesis methods. The multimodal self tuning piezoelectric damper is demonstrated experimentally as a two-mode system applied to add damping to a cantilevered beam. (AU)

FAPESP's process: 09/10715-1 - Theoretical Modeling and Experimental Analysis of the Active Control of Sound Transmission Through Double Panels
Grantee:Andre Lucchino Goldstein
Support Opportunities: Scholarships in Brazil - Post-Doctoral