Multimodal reduction of acoustic radiation of thin plates by using a single piezoelectric patch with a negative capacitance shunt
| Autor: | Vicente Romero-García, Gaël Matten, Charles Pezerat, Charlie Bricault, Manuel Collet, P. Perrard, Adrien Pyskir |
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| Přispěvatelé: | Laboratoire d'Acoustique de l'Université du Mans (LAUM), Centre National de la Recherche Scientifique (CNRS)-Le Mans Université (UM), Laboratoire de Tribologie et Dynamique des Systèmes (LTDS), École Centrale de Lyon (ECL), Université de Lyon-Université de Lyon-École Nationale des Travaux Publics de l'État (ENTPE)-Ecole Nationale d'Ingénieurs de Saint Etienne-Centre National de la Recherche Scientifique (CNRS), Franche-Comté Électronique Mécanique, Thermique et Optique - Sciences et Technologies (UMR 6174) (FEMTO-ST), Université de Technologie de Belfort-Montbeliard (UTBM)-Ecole Nationale Supérieure de Mécanique et des Microtechniques (ENSMM)-Université de Franche-Comté (UFC), Université Bourgogne Franche-Comté [COMUE] (UBFC)-Université Bourgogne Franche-Comté [COMUE] (UBFC)-Centre National de la Recherche Scientifique (CNRS), Université de Rennes 1 - Faculté de Médecine (UR1 Médecine), Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES) |
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
010302 applied physics
Optimal design Materials science Acoustics and Ultrasonics Acoustics Stiffness food and beverages 01 natural sciences Piezoelectricity Instability [PHYS.MECA.ACOU]Physics [physics]/Mechanics [physics]/Acoustics [physics.class-ph] Vibration Negative capacitance 0103 physical sciences medicine Acoustic radiation suppression Acoustic radiation medicine.symptom Vibration damping 010301 acoustics Shunt (electrical) Negative impedance converter |
| Zdroj: | Applied Acoustics Applied Acoustics, Elsevier, 2019, 145, pp.320-327. ⟨10.1016/j.apacoust.2018.10.016⟩ |
| ISSN: | 0003-682X |
| DOI: | 10.1016/j.apacoust.2018.10.016⟩ |
| Popis: | International audience; The ability of a single piezoelectric patch with a single negative capacitance shunt for the multimodal vibration damping is used in this work to drastically reduce the acoustic radiation of a vibrating plate. With a geometry fixed, the elastic properties can be controlled using the resistance and the negative capacitance of the shunt: using a value of the negative capacitance close to the instability domain of the circuit, the stiffness can be placed in the softening region of the system, while the resistance tunes both the stiffness and losses. By means of an optimal design, several modes with non-zero electrome-chanical coupling factors can be simultaneously damped. As a consequence at these frequencies the acoustic radiation of the plate is drastically decreased. The results open prospects to tackle the vibration and acoustic problems in an industrial context. |
| Databáze: | OpenAIRE |
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