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AuthorMohamed, Khaled Saad
AuthorAmri, Fatin
AuthorElboraey, Mostafa Mohamed
AuthorNordin, N.H. Diyana
AuthorAbdul Muthalif, Asan Gani
Available date2024-05-14T03:51:41Z
Publication Date2022
Publication NameStrojniski Vestnik/Journal of Mechanical Engineering
ResourceScopus
Identifierhttp://dx.doi.org/10.5545/sv-jme.2021.7458
ISSN392480
URIhttp://hdl.handle.net/10576/54933
AbstractAll structures experience vibrations due to external dynamic force excitations, such as earthquakes and wind loadings. At resonance, the impact of this natural dynamic force on structures may lead to structural failures. Hence, an absorber is mounted to absorb vibrations from the primary system. Unfortunately, passive tuned mass absorbers can only target a single frequency. Since structural buildings possess multiple modes, an adaptive or tune-able vibration absorber is needed to attenuate the vibration in a multi-degree of freedom (MDOF) system. In this work, an adaptive electromagnetic vibration absorber (AEMVA) is proposed to eliminate the effects of vibrations and is dynamically tuned using electromagnets. By varying the current supplied to the coil, the stiffness of the AEMVA can be adjusted, resulting in a varying absorber frequency. A mathematical description of the AEMVA on a three-story prototype model building is also presented. The three-story benchmark model was used to demonstrate the effectiveness of AEMVA in absorbing multiple vibration modes, both analytically and experimentally. It is shown that 68.81 %, 50.49 %, and 33.45 % of vibration amplitude reductions were achieved at the first, second, and third modes, respectively.
SponsorThis work is partly supported by Qatar University Student Grant no: QUST-2-CENG-2020-3.
Languageen
PublisherAssoc. of Mechanical Eng. and Technicians of Slovenia
Subjectadaptive vibration absorber
dynamic modelling
electromagnetic vibration absorber
multimode system
structural vibration control
TitleAdaptive Electromagnetic Vibration Absorber for a Multimode Structure
TypeArticle
Pagination191-199
Issue Number3
Volume Number68
dc.accessType Abstract Only


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