IDEAS home Printed from https://ideas.repec.org/a/eee/chsofr/v192y2025ics096007792500061x.html
   My bibliography  Save this article

Nonlinear vibration suppression of a dual-rotor system with combined misalignment using the nonlinear energy sink

Author

Listed:
  • Miao, Xueyang
  • He, Junzeng
  • Jiang, Dong
  • Zhang, Dahai
  • Pennacchi, Paolo
  • Fei, Qingguo

Abstract

Misalignment in aero-engine rotor systems increases vibration and contributes to bearing failures. This study investigates a shared bearing bore-coaxial dual-rotor system with combined misalignment of couplings and bearings, analyzing its vibration characteristics and exploring vibration suppression strategies using the nonlinear energy sink (NES). A unified nonlinear restoring force model considering the misalignment of roller and ball bearings is developed, and the dynamic equations of the dual-rotor system with combined misalignment are derived. The NES is modeled using Lagrange's method and integrated into the dual-rotor system to suppress vibration. Optimal NES parameters are obtained using a genetic algorithm with the objective of minimizing amplitude. A roller bearing-rotor system test rig was constructed to validate the misaligned bearing model. Finally, the effect of NES on suppressing vibrations is analyzed, along with the influence of NES parameter variations on the dynamic characteristics. The results indicate that NES effectively reduces the vibration near critical speeds and the resonance peaks caused by misalignment, introduces a modulation frequency interval (fr1-fr2), and leads to different motion states in the rotor system.

Suggested Citation

  • Miao, Xueyang & He, Junzeng & Jiang, Dong & Zhang, Dahai & Pennacchi, Paolo & Fei, Qingguo, 2025. "Nonlinear vibration suppression of a dual-rotor system with combined misalignment using the nonlinear energy sink," Chaos, Solitons & Fractals, Elsevier, vol. 192(C).
    • Handle: RePEc:eee:chsofr:v:192:y:2025:i:c:s096007792500061x
    DOI: 10.1016/j.chaos.2025.116048
    as

    Download full text from publisher

    File URL: http://www.sciencedirect.com/science/article/pii/S096007792500061X
    Download Restriction: Full text for ScienceDirect subscribers only
    File URL: https://libkey.io/10.1016/j.chaos.2025.116048?utm_source=ideas
    LibKey link: if access is restricted and if your library uses this service, LibKey will redirect you to where you can use your library subscription to access this item
    ---><---

    As the access to this document is restricted, you may want to search for a different version of it.

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:eee:chsofr:v:192:y:2025:i:c:s096007792500061x. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    We have no bibliographic references for this item. You can help adding them by using this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: Thayer, Thomas R. (email available below). General contact details of provider: https://www.journals.elsevier.com/chaos-solitons-and-fractals .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.