Modal analysis and demonstration of metastructure combining local resonators and an autonomous synchronized switch damping circuit
A locally resonant metastructure is a promising approach for low-frequency vibration attenuation, whereas the attachment of many resonators results in unnecessary and multiple resonance outside the bandgap. To address this issue, we propose a damping metastructure combining local resonators and an a...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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SAGE Publishing
2022-06-01
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| Series: | Journal of Low Frequency Noise, Vibration and Active Control |
| Online Access: | https://doi.org/10.1177/14613484211068244 |
| _version_ | 1817992236899500032 |
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| author | Haruhiko Asanuma Sumito Yamauchi |
| author_facet | Haruhiko Asanuma Sumito Yamauchi |
| author_sort | Haruhiko Asanuma |
| collection | DOAJ |
| description | A locally resonant metastructure is a promising approach for low-frequency vibration attenuation, whereas the attachment of many resonators results in unnecessary and multiple resonance outside the bandgap. To address this issue, we propose a damping metastructure combining local resonators and an autonomous synchronized switch damping circuit. On the basis of modal analysis, we derive an electromechanically coupled equation of the proposed metastructure. The piezo ceramics, which are attached on a small portion of the metastructure and connected to the circuit, remarkably decrease the magnitude of the resonant vibration with no extra sensors, signal processors, or power sources. The displacement at unnecessary resonance was decreased by approximately 75%. The results of the coupled analysis were similar to the experimentally observed results in terms of the location and width of the bandgap on the frequency axis and the decreased displacement for the circuit. The proposed technique can overcome the disadvantage of the metastructure. |
| first_indexed | 2024-04-14T01:23:44Z |
| format | Article |
| id | doaj.art-9c41e8c3d7214c19a01b369aa502dc1d |
| institution | Directory Open Access Journal |
| issn | 1461-3484 2048-4046 |
| language | English |
| last_indexed | 2024-04-14T01:23:44Z |
| publishDate | 2022-06-01 |
| publisher | SAGE Publishing |
| record_format | Article |
| series | Journal of Low Frequency Noise, Vibration and Active Control |
| spelling | doaj.art-9c41e8c3d7214c19a01b369aa502dc1d2022-12-22T02:20:32ZengSAGE PublishingJournal of Low Frequency Noise, Vibration and Active Control1461-34842048-40462022-06-014110.1177/14613484211068244Modal analysis and demonstration of metastructure combining local resonators and an autonomous synchronized switch damping circuitHaruhiko AsanumaSumito YamauchiA locally resonant metastructure is a promising approach for low-frequency vibration attenuation, whereas the attachment of many resonators results in unnecessary and multiple resonance outside the bandgap. To address this issue, we propose a damping metastructure combining local resonators and an autonomous synchronized switch damping circuit. On the basis of modal analysis, we derive an electromechanically coupled equation of the proposed metastructure. The piezo ceramics, which are attached on a small portion of the metastructure and connected to the circuit, remarkably decrease the magnitude of the resonant vibration with no extra sensors, signal processors, or power sources. The displacement at unnecessary resonance was decreased by approximately 75%. The results of the coupled analysis were similar to the experimentally observed results in terms of the location and width of the bandgap on the frequency axis and the decreased displacement for the circuit. The proposed technique can overcome the disadvantage of the metastructure.https://doi.org/10.1177/14613484211068244 |
| spellingShingle | Haruhiko Asanuma Sumito Yamauchi Modal analysis and demonstration of metastructure combining local resonators and an autonomous synchronized switch damping circuit Journal of Low Frequency Noise, Vibration and Active Control |
| title | Modal analysis and demonstration of metastructure combining local resonators and an autonomous synchronized switch damping circuit |
| title_full | Modal analysis and demonstration of metastructure combining local resonators and an autonomous synchronized switch damping circuit |
| title_fullStr | Modal analysis and demonstration of metastructure combining local resonators and an autonomous synchronized switch damping circuit |
| title_full_unstemmed | Modal analysis and demonstration of metastructure combining local resonators and an autonomous synchronized switch damping circuit |
| title_short | Modal analysis and demonstration of metastructure combining local resonators and an autonomous synchronized switch damping circuit |
| title_sort | modal analysis and demonstration of metastructure combining local resonators and an autonomous synchronized switch damping circuit |
| url | https://doi.org/10.1177/14613484211068244 |
| work_keys_str_mv | AT haruhikoasanuma modalanalysisanddemonstrationofmetastructurecombininglocalresonatorsandanautonomoussynchronizedswitchdampingcircuit AT sumitoyamauchi modalanalysisanddemonstrationofmetastructurecombininglocalresonatorsandanautonomoussynchronizedswitchdampingcircuit |