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DC Field | Value | Language |
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dc.citation.startPage | 108832 | - |
dc.citation.title | MECHANICAL SYSTEMS AND SIGNAL PROCESSING | - |
dc.citation.volume | 170 | - |
dc.contributor.author | Bae, Myung Hwan | - |
dc.contributor.author | Oh, Joo Hwan | - |
dc.date.accessioned | 2023-12-21T14:11:47Z | - |
dc.date.available | 2023-12-21T14:11:47Z | - |
dc.date.created | 2022-05-26 | - |
dc.date.issued | 2022-05 | - |
dc.description.abstract | We propose a new nonlinear elastic metamaterial which shows tunable bandgap at quasi-static frequency, starting from zero frequency. While there have been active researches on nonlinear induced tunable bandgap in elastic metamaterials at high or mid-frequency range, these researches were not suitable to achieve bandgap tunability at the quasi-static frequency range since unfeasible design, such as extremely huge size or unrealistic resonators, was required. Also, achieving sufficient nonlinearity at this frequency range has been a formidable challenge that hinders the realization of bandgap tunability at the quasi-static frequency. Here, we propose the elastic metamaterial which utilizes geometric nonlinearity to realize the bandgap tunability at the quasi-static frequency range. From theoretical investigations, we found that the nonlinearity of the proposed elastic metamaterial provides two kinds of the bandgap tunability - by wave amplitude and by length change of the attached springs. Also, we found that our nonlinear metamaterial exhibits tunable negative effective mass around the quasi-static frequency, due to the nonlinear effect. To support these findings, numerical simulation and experimental realization are carried out. We expect that this research provides a route for opening a new field in vibrations engineering dealing with the quasi-static frequencies. | - |
dc.identifier.bibliographicCitation | MECHANICAL SYSTEMS AND SIGNAL PROCESSING, v.170, pp.108832 | - |
dc.identifier.doi | 10.1016/j.ymssp.2022.108832 | - |
dc.identifier.issn | 0888-3270 | - |
dc.identifier.scopusid | 2-s2.0-85123031980 | - |
dc.identifier.uri | https://scholarworks.unist.ac.kr/handle/201301/58595 | - |
dc.identifier.url | https://www.sciencedirect.com/science/article/pii/S0888327022000292?via%3Dihub | - |
dc.identifier.wosid | 000793293800001 | - |
dc.language | 영어 | - |
dc.publisher | ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD | - |
dc.title | Nonlinear elastic metamaterial for tunable bandgap at quasi-static frequency | - |
dc.type | Article | - |
dc.description.isOpenAccess | FALSE | - |
dc.relation.journalWebOfScienceCategory | Engineering, Mechanical | - |
dc.relation.journalResearchArea | Engineering | - |
dc.type.docType | Article | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.subject.keywordAuthor | Tunable metamaterial | - |
dc.subject.keywordAuthor | Nonlinear | - |
dc.subject.keywordAuthor | Bandgap | - |
dc.subject.keywordAuthor | Low frequency | - |
dc.subject.keywordAuthor | Negative effective mass | - |
dc.subject.keywordPlus | WAVE-PROPAGATION | - |
dc.subject.keywordPlus | IMPACT | - |
dc.subject.keywordPlus | BEAM | - |
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