Abstract
Incorporating actively implemented resonators within elastic piezoelectric metastructures presents a unique approach for vibration attenuation, enabling the creation of tuneable low-frequency bandgaps. Through feedback control, we enhance the compactness of these metastructures by integrating resonator dynamics internally. We study the influence of varying the cross-section of the base substrate and the arrangement of transducers on bandgap generation. This influence is captured by the changes in the electromechanical coupling and stiffness of the metastructure, which appear directly in the formulas for bandgap edge frequencies in ideal conditions. This relationship is illustrated with numerical examples for realistic metastructures with a finite number of transducers. Our focus is on metastructures with sensors and actuators, employing feedback control techniques for resonator implementation as an alternative to shunt circuits. When a bandgap is generated in a finite metastructure, its edge frequencies can be calculated in closed form using the assumption of an infinite number of transducers of infinitesimal length distributed along the structure.
Original language | English |
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Title of host publication | Proceedings of the 18th International Congress on Artificial Materials for Novel Wave Phenomena, Metamaterials 2024 |
Publisher | IEEE |
Number of pages | 3 |
ISBN (Electronic) | 979-8-3503-7349-3 |
DOIs | |
Publication status | Published - 2024 |
Event | 18th International Congress on Artificial Materials for Novel Wave Phenomena, Metamaterials 2024 - Chania, Greece Duration: 9 Sept 2024 → 14 Sept 2024 |
Conference
Conference | 18th International Congress on Artificial Materials for Novel Wave Phenomena, Metamaterials 2024 |
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Country/Territory | Greece |
City | Chania |
Period | 9/09/24 → 14/09/24 |
Bibliographical note
Green Open Access added to TU Delft Institutional Repository 'You share, we take care!' - Taverne project https://www.openaccess.nl/en/you-share-we-take-careOtherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.