Passive vibration damping enhancement of piezoelectric shunt damping system using optimization approach |
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Authors: | Jin-Young Jeon |
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Affiliation: | (1) Digital Printing Division, Digital Media & Communications Business, Samsung Electronics Co., Ltd., Suwon-City, 443-742, Korea |
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Abstract: | Piezoelectric materials can be used for structural damping because of their ability to efficiently transform mechanical energy
to electrical energy and vice versa. The electrical energy may be dissipated through a connected load resistance. In this
paper, a new optimization technique for the optimal piezoelectric shunt damping system is investigated in order to search
for the optimal shunt electrical components of the shunt damping circuit connected to the piezoelectric patch on a vibrating
structure for the structural vibration suppression of several modes. The vibration suppression optimization technique is based
on the idea of using the piezoelectric shunt damping system, the integrated p-version finite element method (p-version FEM),
and the particle swarm optimization algorithm (PSOA). The optimal shunt electrical components for the piezoelectric shunt
damping system are then determined by wholly minimizing the objective function, which is defined as the sum of the average
vibration velocity over a frequency range of interest. Moreover, the optimization technique is performed by also taking into
account the inherent mechanical damping of the controlled structure with the piezoelectric patch. To numerically evaluate
the multiple-mode damping capability by the optimal shunting damper, an integrated p-version FEM for the beam with the shunt
damping system is modeled and developed by MATLAB. Finally, the structural damping performance of the optimal shunt damping
system is demonstrated numerically and experimentally with respect to the beam. The simulated result shows a good agreement
with that of the experimental result.
This paper was recommended for publication in revised form by Associate Editor Eung-Soo Shin
Jin-Young Jeon received his Ph.D. degree in Mechanical and Aerospace Engineering from Tokyo Institute of Technology in 2005. Dr. Jeon is
currently a senior engineer at Digital Printing Division, Digital Media & Communications Business at Samsung Electronics Co.,
Ltd., Korea. His research interests are the areas of structural-acoustic optimization, sound quality, motion quality, and
vibration control. |
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Keywords: | Piezoelectric shunt damping system P-version FEM Mobility Passive vibration damping enhancement |
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