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Volume 29 Issue 6
 
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Article Navigation >  Journal of Unmanned Undersea Systems  > 2021  >  29(6): 690-694
SONG Wen, YANG Cheng-shi, CHEN Zhi-wei, SUN Yan, REN Xin, LI Gang, CHAI Xiao-shuai. Nonlinear Dynamic Characteristics Analysis of Torpedo Turbine Rotor-Rolling Bearing System[J]. Journal of Unmanned Undersea Systems, 2021, 29(6): 690-694. doi: 10.11993/j.issn.2096-3920.2021.06.007
Citation: SONG Wen, YANG Cheng-shi, CHEN Zhi-wei, SUN Yan, REN Xin, LI Gang, CHAI Xiao-shuai. Nonlinear Dynamic Characteristics Analysis of Torpedo Turbine Rotor-Rolling Bearing System[J]. Journal of Unmanned Undersea Systems, 2021, 29(6): 690-694. doi: 10.11993/j.issn.2096-3920.2021.06.007
shu

Nonlinear Dynamic Characteristics Analysis of Torpedo Turbine Rotor-Rolling Bearing System

doi: 10.11993/j.issn.2096-3920.2021.06.007
  • 1.

    The 705 Research Institute, China State Shipbuilding Corporation Limited, Xi’an 710077, China

  • 2.

    2 ShanXi PingYang Industry Machinery Co.LTD, Linfen 043003, China

  • Received Date: 2021-12-06
  • Rev Recd Date: 2021-01-04
  • Publish Date: 2021-12-31
    Abstract
  • To investigate the dynamic response of a torpedo turbine rotor, a dynamic model of a cantilever rotor-rolling bearing system is established, and the effect of the radial clearance of the bearing, nonlinear Hertz contact stiffness, and unbalance of the rotor are considered. The numerical simulation of the dynamic model of the system is carried out based on the variable step-size Runge-Kutta method. The maximum Lyapunov exponential spectra of the two-parameter plane are calculated, and the distribution of periodic and aperiodic motions of the rotor system with the change in the two parameters is obtained. The time-domain, frequency-domain, and periodic characteristics of the system under specific parameters are also studied. The analysis results show that the minimum speed in the chaotic region decreases with an increase in the bearing radial clearance. This study provides a useful reference for the design of torpedo-turbine systems.

     

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