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Semi-passive Piezoelectric Structural Damping by Synchronized Switching on Voltage Sources

Semi-passive damping techniques have been developed recently to address the problem of structural damping. Contrary to the standard passive piezoelectric damping, these new techniques adapt to environmental variations. Moreover, they present interesting multimodal damping performances. However, thei...

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Published in:Journal of intelligent material systems and structures 2006-09, Vol.17 (8-9), p.653-660
Main Authors: Lefeuvre, Elie, Badel, Adrien, Petit, Lionel, Richard, Claude, Guyomar, Daniel
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Language:English
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description Semi-passive damping techniques have been developed recently to address the problem of structural damping. Contrary to the standard passive piezoelectric damping, these new techniques adapt to environmental variations. Moreover, they present interesting multimodal damping performances. However, their efficiency is strongly correlated with their electromechanical coupling. The enhanced semi-passive damping technique presented herein compensates for this drawback. It reinforces the electromechanical coupling by artificially increasing the voltage amplitude delivered by the piezoelectric patches. Theoretical predictions and experimental results show a −24 dB attenuation on the vibration of a resonant cantilever steel beam, while reducing the piezoelectric material volume by 83%.
doi_str_mv 10.1177/1045389X06055810
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subjects Exact sciences and technology
Fundamental areas of phenomenology (including applications)
General equipment and techniques
Instruments, apparatus, components and techniques common to several branches of physics and astronomy
Measurement and testing methods
Physics
Servo and control equipment
robots
Solid mechanics
Structural and continuum mechanics
title Semi-passive Piezoelectric Structural Damping by Synchronized Switching on Voltage Sources
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