20.500.12556/RUL-136405 Adaptive electromagnetic vibration absorber for a multimode structure Adaptivni elektromagnetni blažilnik vibracij za večmodalne konstrukcije 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. adaptive vibration absorbers electromagnetic vibration absorbers multimode systems dynamic modelling structural vibration control adaptivni blažilniki vibracij elektromagnetni blažilniki vibracij večmodalni sistemi dinamično modeliranje nadzor nad vibracijami analiza v frekvenčni domeni mehanski model vibracij true false true Angleški jezik Slovenski jezik Članek v reviji 2022-04-29 09:33:14 2022-04-29 09:33:19 2022-09-15 04:13:51 0000-00-00 00:00:00 2022 0 0 Str. 191-199 no. 3 Vol. 68 Mar. 2022 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 2022-03-01 531.38/.39 0039-2480 10.5545/sv-jme.2021.7458 105884675 Mohamed_..._-_Adaptive_Electromagnetic_Vibration_Absorber_for_a_Multimode_Structure.pdf Mohamed_..._-_Adaptive_Electromagnetic_Vibration_Absorber_for_a_Multimode_Structure.pdf 1 8E06E81EB845BF404F6F4C72B1A0B2AE 326af09422ffdb8f1800b7543e575d37b100984f1d2e3da16f3eca97d7a5cf84 bfca3ed8-c78e-11ec-8aca-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=156034 https://www.sv-jme.eu/sl/article/adaptive-electromagnetic-vibration-absorber-for-a-multimode-structure/ 1 9010550b-c78e-11ec-8aca-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=156033 Fakulteta za strojništvo Strojniški vestnik 0 0 0