This research proposes a transient mixed elastohydrodynamic model considering turbulence and bush wear, as well as the concept of contact work, to study the transient tribo-dynamic characteristics of water-lubricated bearings. The effects of turbulence, wear depth, and wear deviation angle on transient tribo-dynamic characteristics of water-lubricated bearings are investigated. The findings show that turbulence significantly affects the dynamics of stable conditions and enhances the hydrodynamic effect, but little affects the frictional contact behavior. An appropriate wear depth favors improving the tribo-dynamic characteristics of the water-lubricated bearings, but it deteriorates as the wear depth continuously increases. Negative deviation angles are better for minimizing contact work and enhancing rotor stability. The lubrication and dynamic properties of water-lubricated bearings can be enhanced through a rational approach to wear morphology design. This research is important for the optimal design and diagnosis of water-lubricated bearings wear failures.

中文翻译：

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湍流和衬套磨损对水润滑轴承瞬态摩擦动力特性的影响

本研究提出了一种考虑湍流和衬套磨损以及接触功概念的瞬态混合弹流体动力学模型，以研究水润滑轴承的瞬态摩擦动力学特性。研究了湍流、磨损深度和磨损偏角对水润滑轴承瞬态摩擦动力特性的影响。研究结果表明，湍流显着影响稳定条件的动力学并增强流体动力效应，但对摩擦接触行为影响不大。适当的磨损深度有利于改善水润滑轴承的摩擦动力特性，但随着磨损深度的不断增加，摩擦动力特性会恶化。负偏角更有利于最大限度地减少接触功并提高转子稳定性。通过合理的磨损形态设计方法可以提高水润滑轴承的润滑和动态性能。该研究对于水润滑轴承磨损故障的优化设计和诊断具有重要意义。