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Adaptive electromagnetic vibration absorber for a multimode structure
ID
Mohamed, Khaled S.
(
Author
),
ID
Amri, Fatin
(
Author
),
ID
Elboraey, Mostafa
(
Author
),
ID
Nordin, N.H. Diyana
(
Author
),
ID
Muthalif, Asan
(
Author
)
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https://www.sv-jme.eu/sl/article/adaptive-electromagnetic-vibration-absorber-for-a-multimode-structure/
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Abstract
All 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.
Language:
English
Keywords:
adaptive vibration absorbers
,
electromagnetic vibration absorbers
,
multimode systems
,
dynamic modelling
,
structural vibration control
Work type:
Article
Typology:
1.01 - Original Scientific Article
Organization:
FS - Faculty of Mechanical Engineering
Publication status:
Published
Publication version:
Version of Record
Publication date:
01.03.2022
Year:
2022
Number of pages:
Str. 191-199
Numbering:
Vol. 68, no. 3
PID:
20.500.12556/RUL-136405
UDC:
531.38/.39
ISSN on article:
0039-2480
DOI:
10.5545/sv-jme.2021.7458
COBISS.SI-ID:
105884675
Publication date in RUL:
29.04.2022
Views:
1440
Downloads:
90
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Record is a part of a journal
Title:
Strojniški vestnik
Shortened title:
Stroj. vestn.
Publisher:
Zveza strojnih inženirjev in tehnikov Slovenije [etc.], = Association of Mechanical Engineers and Technicians of Slovenia [etc.
ISSN:
0039-2480
COBISS.SI-ID:
762116
Secondary language
Language:
Slovenian
Title:
Adaptivni elektromagnetni blažilnik vibracij za večmodalne konstrukcije
Keywords:
adaptivni blažilniki vibracij
,
elektromagnetni blažilniki vibracij
,
večmodalni sistemi
,
dinamično modeliranje
,
nadzor nad vibracijami
,
analiza v frekvenčni domeni
,
mehanski model vibracij
Projects
Funder:
Other - Other funder or multiple funders
Funding programme:
Qatar University Student
Project number:
QUST-2-CENG-2020-3
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