On the Formation of a Super Attenuation Band in a Mono-coupled Finite Periodic Structure Comprising Asymmetric Cells

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dc.contributor.authorGermanos Cleante, Vinicius [UNESP]
dc.contributor.authorBrennan, Michael John [UNESP]
dc.contributor.authorPaupitz Gonçalves, Paulo José [UNESP]
dc.contributor.authorCarneiro, Jean Paulo [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)
dc.date.accessioned2023-07-29T15:14:00Z
dc.date.available2023-07-29T15:14:00Z
dc.date.issued2023-01-01
dc.description.abstractMetamaterials are employed to reduce vibration levels by exploiting the effects of structural periodicity. When structural elements are arranged in a periodic pattern, they act as mechanical filters, creating stop-bands. The term stop-band is often used for infinite structures, but a more appropriate term for a finite structure is attenuation band. A way of obtaining this effect is by attaching vibration absorbers, which create a local resonance stop-band plus a Bragg stop-band. The local resonance stop-band is controlled only by the properties of the attached device. The Bragg stop-band depends on the interaction between the host cell and the device. The combination of these two effects can create an attenuation zone – the so-called super attenuation band. Recent works on finite mono-coupled metamaterials have shown that asymmetric periodic structures have better attenuation properties when compared to the symmetric ones, if they are correctly orientated. This paper investigates the formation of a super attenuation band in a finite mono-coupled structure using vibration absorbers. The system is defined by the formation of a cell, which repeats along with the whole structure. The cell can be divided into sub-cells with equal or different dynamic properties. The dynamic features to form the super attenuation band are determined from the displacement transmissibility of a single cell. This analysis is extended to several cells. The results show that a super attenuation band can only occur when each attached vibration absorber is optimally tuned to its corresponding host cell in a structure comprising cells with dynamical asymmetry.en
dc.description.affiliationSchool of Engineering São Paulo State University (UNESP)
dc.description.affiliationUnespSchool of Engineering São Paulo State University (UNESP)
dc.format.extent703-712
dc.identifierhttp://dx.doi.org/10.1007/978-3-031-15758-5_72
dc.identifier.citationMechanisms and Machine Science, v. 125 MMS, p. 703-712.
dc.identifier.doi10.1007/978-3-031-15758-5_72
dc.identifier.issn2211-0992
dc.identifier.issn2211-0984
dc.identifier.scopus2-s2.0-85141755813
dc.identifier.urihttp://hdl.handle.net/11449/249363
dc.language.isoeng
dc.relation.ispartofMechanisms and Machine Science
dc.sourceScopus
dc.subjectAsymmetric
dc.subjectFinite structure
dc.subjectMono-coupled
dc.subjectSuper attenuation band
dc.subjectSuper stop-band
dc.titleOn the Formation of a Super Attenuation Band in a Mono-coupled Finite Periodic Structure Comprising Asymmetric Cellsen
dc.typeTrabalho apresentado em evento
unesp.author.orcid0000-0003-0731-8524[1]
unesp.author.orcid0000-0001-5874-5863[2]
unesp.author.orcid0000-0001-7983-5665[3]
unesp.author.orcid0000-0002-9449-4771[4]
unesp.departmentHistória - FCLASpt
unesp.departmentEngenharia Mecânica - FEISpt

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