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<p>This study proposes an innovative water-lubricated spherical stern bearing structure, which is engineered to ensure uniform load distribution, extend the operational lifespan of the bearing bushing, and improve dynamic performance. This configuration distinctively integrates the stator of the stern bearing with a self-lubricating universal joint bearing. The spherical universal joint facilitates uniform distribution of the bearing load, thereby mitigating the maximum contact pressure at the peripheral regions of the bearing brush. In order to enhance the dynamic performance of the bearing, a layer of damping material is incorporated between the bearing bushing and the body. Numerical simulations indicate that the implementation of this integrated bearing leads to a reduction in maximum contact pressure by over 80% relative to conventional bearings. Additionally, spherical-type stern bearings markedly enhance vibration damping, as evidenced by reduced acceleration responses and an improvement of 10 dB in vibration level differences when compared to standard stern bearings.</p>

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Articulated spherical water-lubricated stern bearings for enhanced load capacity and dynamics of the propulsion system

  • 期刊论文

  • 发表日期：

    2025年9月2日

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  • Yiwen Wang,
  • Yingzhi Zhou,
  • Binbin Wang,
  • Fei Zhang,
  • Tao He,
  • Tao Zhou,
  • Yang Xia

摘要

This study proposes an innovative water-lubricated spherical stern bearing structure, which is engineered to ensure uniform load distribution, extend the operational lifespan of the bearing bushing, and improve dynamic performance. This configuration distinctively integrates the stator of the stern bearing with a self-lubricating universal joint bearing. The spherical universal joint facilitates uniform distribution of the bearing load, thereby mitigating the maximum contact pressure at the peripheral regions of the bearing brush. In order to enhance the dynamic performance of the bearing, a layer of damping material is incorporated between the bearing bushing and the body. Numerical simulations indicate that the implementation of this integrated bearing leads to a reduction in maximum contact pressure by over 80% relative to conventional bearings. Additionally, spherical-type stern bearings markedly enhance vibration damping, as evidenced by reduced acceleration responses and an improvement of 10 dB in vibration level differences when compared to standard stern bearings.