Acta Mechanica Sinica

, Volume 34, Issue 5, pp 963–969 | Cite as

Gyroscopic modes decoupling method in parametric instability analysis of gyroscopic systems

  • Y. J. Qian
  • X. D. YangEmail author
  • H. Wu
  • W. Zhang
  • T. Z. Yang
Research Paper


Traditional procedures to treat vibrations of gyroscopic continua involve direct application of perturbation methods to a system with both a strong gyroscopic term and other weakly coupled terms. In this study, a gyroscopic modes decoupling method is used to obtain an equivalent system with decoupled gyroscopic modes having only weak couplings. Taking the axially moving string as an example, the instability boundaries in the vicinity of parametric resonances are detected using both the traditional coupled gyroscopic system and our system with decoupled gyroscopic modes, and the results are compared to show the advantages and disadvantages of each method.


Axially moving material Decoupling of gyroscopic modes Parametric instability Perturbation method Gyroscopic system 



This work was supported by the National Natural Science Foundation of China (Grants 11772009, 11672007) and the Beijing Municipal Natural Science Foundation (Grant 3172003).


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Copyright information

© The Chinese Society of Theoretical and Applied Mechanics; Institute of Mechanics, Chinese Academy of Sciences and Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  • Y. J. Qian
    • 1
  • X. D. Yang
    • 1
    Email author
  • H. Wu
    • 1
  • W. Zhang
    • 1
  • T. Z. Yang
    • 2
  1. 1.College of Mechanical EngineeringBeijing University of TechnologyBeijingChina
  2. 2.Department of MechanicsTianjing UniversityTianjingChina

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