Towards a self tuning sliding mass metastructure

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dc.contributor.authorBukhari, Mohammad A.en
dc.contributor.authorBarry, Oumar R.en
dc.date.accessioned2021-12-14T14:07:55Zen
dc.date.available2021-12-14T14:07:55Zen
dc.date.issued2021-11-03en
dc.description.abstractPassive vibration control systems are characterized by their simple practical design and independence of external power supplies. However, they are usually hindered by their narrow frequency band that cannot handle variable frequency disturbances. Recent research has demonstrated the capability of passive self-tuning resonators through the use of a sliding mass without the need for any external power sources. This work analytically and experimentally investigates the passive self-tuning of a metastructure consisting of a clamped-clamped beam with a sliding mass. The governing equations of motion show that the slider can be driven by Coriolis and centrifugal forces upon applying the excitation force on the structure. To improve the accuracy of our analytical simulations, we derive the exact instantaneous mode shapes and frequencies of the structure and feed them into an adaptive algorithm, which updates the spatial state of the system. Numerical simulations demonstrate that the proposed resonator can tune itself to the excitation frequency as the slider reaches the equilibrium position. This observation suggests that a significant vibration reduction can be obtained using the proposed resonator over a wide frequency band. Experiments are carried out to validate the analytical findings. The proposed structure can be used in different vibration control applications (i.e., aerospace, automotive, and machining), and its model can further be extended to self-adaptive periodic structures (metamaterials).en
dc.description.notesThis work is supported in part by the National Science Foundation (NSF) Grant CAREER ECCS-1944032 and the NSF CMMI-2038187.en
dc.description.sponsorshipNational Science Foundation (NSF)National Science Foundation (NSF) [CAREER ECCS-1944032]; NSFNational Science Foundation (NSF) [CMMI-2038187]en
dc.description.versionPublished versionen
dc.format.mimetypeapplication/pdfen
dc.identifier.doihttps://doi.org/10.1038/s41598-021-00526-wen
dc.identifier.issn2045-2322en
dc.identifier.issue1en
dc.identifier.other21630en
dc.identifier.pmid34732734en
dc.identifier.urihttp://hdl.handle.net/10919/106965en
dc.identifier.volume11en
dc.language.isoenen
dc.rightsCreative Commons Attribution 4.0 Internationalen
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/en
dc.titleTowards a self tuning sliding mass metastructureen
dc.title.serialScientific Reportsen
dc.typeArticle - Refereeden
dc.type.dcmitypeTexten
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