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Dynamic Analysis for a Disk‐Inertial‐Asymmetry Rotor System.

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Title: Dynamic Analysis for a Disk‐Inertial‐Asymmetry Rotor System.
Authors: Liu, Di1,2,3 (AUTHOR) liudi2020@iet.cn, Hong, Jie4 (AUTHOR), Feng, Yinli1 (AUTHOR), Sinou, Jean-Jacques (AUTHOR) jean-jacques.sinou@ec-lyon.fr
Source: Shock & Vibration. 12/17/2025, Vol. 2025, p1-15. 15p.
Subjects: Rotors, Rotor dynamics, Modal analysis, Kinematics, Frequencies of oscillating systems, Chaos theory, Lagrange problem
Abstract: In this paper, the dynamic characteristics of a rotor with disk inertial asymmetry are investigated. A rotor model is developed using the Lagrange method, and a modal analysis technique based on Hill's determinant is derived. The modal properties and dynamic responses of the asymmetrical rotor are then analyzed. Experimental studies are carried out to validate the resonance broadening phenomenon observed in numerical simulations. Results indicate that the dynamics of such a rotor exhibit multifrequency vibrations and unstable behavior. Notably, these characteristics such as the emergence of resonance bands instead of distinct critical speeds and speed‐dependent instability regions are unique to asymmetric rotors and are not observed in symmetric rotor systems. [ABSTRACT FROM AUTHOR]
Copyright of Shock & Vibration is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: Dynamic Analysis for a Disk‐Inertial‐Asymmetry Rotor System.
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  Data: <searchLink fieldCode="AR" term="%22Liu%2C+Di%22">Liu, Di</searchLink><relatesTo>1,2,3</relatesTo> (AUTHOR)<i> liudi2020@iet.cn</i><br /><searchLink fieldCode="AR" term="%22Hong%2C+Jie%22">Hong, Jie</searchLink><relatesTo>4</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Feng%2C+Yinli%22">Feng, Yinli</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Sinou%2C+Jean-Jacques%22">Sinou, Jean-Jacques</searchLink> (AUTHOR)<i> jean-jacques.sinou@ec-lyon.fr</i>
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  Data: <searchLink fieldCode="JN" term="%22Shock+%26+Vibration%22">Shock & Vibration</searchLink>. 12/17/2025, Vol. 2025, p1-15. 15p.
– Name: Subject
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  Data: <searchLink fieldCode="DE" term="%22Rotors%22">Rotors</searchLink><br /><searchLink fieldCode="DE" term="%22Rotor+dynamics%22">Rotor dynamics</searchLink><br /><searchLink fieldCode="DE" term="%22Modal+analysis%22">Modal analysis</searchLink><br /><searchLink fieldCode="DE" term="%22Kinematics%22">Kinematics</searchLink><br /><searchLink fieldCode="DE" term="%22Frequencies+of+oscillating+systems%22">Frequencies of oscillating systems</searchLink><br /><searchLink fieldCode="DE" term="%22Chaos+theory%22">Chaos theory</searchLink><br /><searchLink fieldCode="DE" term="%22Lagrange+problem%22">Lagrange problem</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: In this paper, the dynamic characteristics of a rotor with disk inertial asymmetry are investigated. A rotor model is developed using the Lagrange method, and a modal analysis technique based on Hill's determinant is derived. The modal properties and dynamic responses of the asymmetrical rotor are then analyzed. Experimental studies are carried out to validate the resonance broadening phenomenon observed in numerical simulations. Results indicate that the dynamics of such a rotor exhibit multifrequency vibrations and unstable behavior. Notably, these characteristics such as the emergence of resonance bands instead of distinct critical speeds and speed‐dependent instability regions are unique to asymmetric rotors and are not observed in symmetric rotor systems. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Shock & Vibration is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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RecordInfo BibRecord:
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      – Type: doi
        Value: 10.1155/vib/9408014
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      – Code: eng
        Text: English
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        PageCount: 15
        StartPage: 1
    Subjects:
      – SubjectFull: Rotors
        Type: general
      – SubjectFull: Rotor dynamics
        Type: general
      – SubjectFull: Modal analysis
        Type: general
      – SubjectFull: Kinematics
        Type: general
      – SubjectFull: Frequencies of oscillating systems
        Type: general
      – SubjectFull: Chaos theory
        Type: general
      – SubjectFull: Lagrange problem
        Type: general
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      – TitleFull: Dynamic Analysis for a Disk‐Inertial‐Asymmetry Rotor System.
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            NameFull: Liu, Di
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            NameFull: Hong, Jie
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            NameFull: Feng, Yinli
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            NameFull: Sinou, Jean-Jacques
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            – D: 17
              M: 12
              Text: 12/17/2025
              Type: published
              Y: 2025
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            – TitleFull: Shock & Vibration
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