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    Energy Transfer of an Axially Loaded Beam With a Parallel-Coupled Nonlinear Vibration Isolator

    Source: Journal of Vibration and Acoustics:;2022:;volume( 144 ):;issue: 005::page 51009-1
    Author:
    Lu
    ,
    Ze-Qi;Liu
    ,
    Wen-Hang;Ding
    ,
    Hu;Chen
    ,
    Li-Qun
    DOI: 10.1115/1.4054324
    Publisher: The American Society of Mechanical Engineers (ASME)
    Abstract: Traditional vibration isolation of satellite instruments has an inherent limitation that low-frequency vibration suppression leads to structural instability. This paper explores a parallel-coupled quasi-zero stiffness (QZS) vibration isolator for an axially loaded beam, with the goal of enhancing the effectiveness of low-frequency isolation. A QZS contains two magnetic rings, which contribute negative stiffness, and one spiral spring, with positive stiffness, a combination that has high static stiffness to resolve the structural instability. The frequency response functions (FRFs) of power flow are used to measure the effectiveness of vibration isolation. The magnetic stiffness of the magnetic rings is calculated using the principle of equivalent magnetic charge. The heights, radii, and gap of the magnetic rings affect its stiffness. The parallel-coupled QZS vibration isolator of an axially loaded beam is modeled using an energy method. Based on the Galerkin truncation, harmonic balance analysis, and arc-length continuation, an approach is proposed to analyze the FRFs of power flow for the parallel-coupled QZS vibration isolation of an axially loaded beam. Numerical results support the analytical results. Both analytical and numerical results show that the power reduction of axially loaded beams with a parallel-coupled quasi-zero vibration isolation system is more significantly suppressed at low frequencies.
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      Energy Transfer of an Axially Loaded Beam With a Parallel-Coupled Nonlinear Vibration Isolator

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    contributor authorLu
    contributor authorZe-Qi;Liu
    contributor authorWen-Hang;Ding
    contributor authorHu;Chen
    contributor authorLi-Qun
    date accessioned2022-08-18T13:08:40Z
    date available2022-08-18T13:08:40Z
    date copyright5/10/2022 12:00:00 AM
    date issued2022
    identifier issn1048-9002
    identifier othervib_144_5_051009.pdf
    identifier urihttp://yetl.yabesh.ir/yetl1/handle/yetl/4287508
    description abstractTraditional vibration isolation of satellite instruments has an inherent limitation that low-frequency vibration suppression leads to structural instability. This paper explores a parallel-coupled quasi-zero stiffness (QZS) vibration isolator for an axially loaded beam, with the goal of enhancing the effectiveness of low-frequency isolation. A QZS contains two magnetic rings, which contribute negative stiffness, and one spiral spring, with positive stiffness, a combination that has high static stiffness to resolve the structural instability. The frequency response functions (FRFs) of power flow are used to measure the effectiveness of vibration isolation. The magnetic stiffness of the magnetic rings is calculated using the principle of equivalent magnetic charge. The heights, radii, and gap of the magnetic rings affect its stiffness. The parallel-coupled QZS vibration isolator of an axially loaded beam is modeled using an energy method. Based on the Galerkin truncation, harmonic balance analysis, and arc-length continuation, an approach is proposed to analyze the FRFs of power flow for the parallel-coupled QZS vibration isolation of an axially loaded beam. Numerical results support the analytical results. Both analytical and numerical results show that the power reduction of axially loaded beams with a parallel-coupled quasi-zero vibration isolation system is more significantly suppressed at low frequencies.
    publisherThe American Society of Mechanical Engineers (ASME)
    titleEnergy Transfer of an Axially Loaded Beam With a Parallel-Coupled Nonlinear Vibration Isolator
    typeJournal Paper
    journal volume144
    journal issue5
    journal titleJournal of Vibration and Acoustics
    identifier doi10.1115/1.4054324
    journal fristpage51009-1
    journal lastpage51009-12
    page12
    treeJournal of Vibration and Acoustics:;2022:;volume( 144 ):;issue: 005
    contenttypeFulltext
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