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Dynamic Characteristics of Encased Differential Gear Train with Journal Bearing

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  • Jie Yang
  • Yanjiong Yue
  • Rupeng Zhu
  • Weifang Chen
  • Miaomiao Li

Abstract

Taking the marine encased differential gear train as an example, the relationship between the journal bearing parameters and the meshing force of the transmission system is analyzed. In this paper, the dynamic model of the encased differential gear train with journal bearing is established considering the factors of time-varying meshing stiffness and comprehensive transmission error. In this dynamic model, four stiffnesses and four damping coefficients are applied to characterize the asymmetry and interaction of the oil film stiffness and damping of planet bearing. The system responses are calculated by the Fourier series numerical algorithm. The results show that the introduction of journal bearing in encased differential gear train can contribute to gearbox vibration reduction. Moreover, the planet bearing parameters (e.g., clearance-to-radius ratio and eccentricity ratio) of the differential stage affect the meshing forces of both the differential and encased stages. In addition, the influence of the planet bearing parameters of the encased stage on the meshing force of the encased stage is more obvious than that of the differential stage. This work may develop a theoretical analysis framework for the design and manufacture of marine transmission systems in the future.

Suggested Citation

  • Jie Yang & Yanjiong Yue & Rupeng Zhu & Weifang Chen & Miaomiao Li, 2020. "Dynamic Characteristics of Encased Differential Gear Train with Journal Bearing," Mathematical Problems in Engineering, Hindawi, vol. 2020, pages 1-15, April.
    • Handle: RePEc:hin:jnlmpe:2436191
    DOI: 10.1155/2020/2436191
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