Vibration control in plates by uniformly distributed PZT actuators interconnected via electric networks |
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| Institution: | 1. College of Environmental Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, China;2. Key Laboratory of Thermo-Fluid Science and Engineering of MOE, Xi’an Jiaotong University, Xi’an 710049, China;1. School of Mechanical Engineering and Automation, University of Science and Technology Liaoning, Anshan, 114051, China;2. School of Mechanical Engineering and Automation, Northeastern University, Shenyang, 110819, China;1. Athens Microneurosurgery Laboratory, Athens, Greece;2. Department of Neurosurgery, National and Kapodistrian University of Athens School of Medicine, Athens, Greece;3. Department of Anatomy and Surgical Anatomy, National and Kapodistrian University of Athens School of Medicine, Athens, Greece;4. Department of Hygiene, Epidemiology, and Medical Statistics, National and Kapodistrian University of Athens School of Medicine, Athens, Greece;5. Department of Neurosurgery, Icahn School of Medicine at Mount Sinai and Mount Sinai Beth Israel, Mount Sinai Health System, New York, New York, USA;6. Department of Anatomy and Surgical Anatomy, Faculty of Health Sciences, Aristotle University of Thessaloniki, Thessaloniki, Greece;1. Department of Civil and Environmental Engineering, Louisiana State University, Baton Rouge, LA, USA;2. Stantec Inc., Baton Rouge, LA, USA |
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| Abstract: | In this paper a novel device aimed at controlling the mechanical vibrations of plates by means of a set of electrically-interconnected piezoelectric actuators is described. The actuators are embedded uniformly in the plate wherein they connect every node of an electric network to ground, thus playing the two-fold role of capacitive element in the electric network and of couple suppliers. A mathematical model is introduced to describe the propagation of electro-mechanical waves in the device; its validity is restricted to the case of wave-forms with wave-length greater than the dimension of the piezoelectric actuators used. A self-resonance criterion is established which assures the possibility of electro-mechanical energy exchange. Finally the problem of vibration control in simply supported and clamped plates is addressed; the optimal net-impedance is determined. The results indicate that the proposed device can improve the performances of piezoelectric actuation. |
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