Exploring turbulence and elastic deformation: Novel insights into dynamic instability in water-lubricated composite journal bearings for hub-type rim-driven thrusters
Wonvin Kim, Su Hyun Lim, Hyunsoo Hong, Dajeong Kang, Wonki Kim, Seung Yoon On, Ha Eun Lee, Sangyoon Bae, Seong Su Kim
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引用次数: 0
Abstract
This study investigated the performance of a hub-type composite journal bearing system in both steady and dynamic states by simplifying the system into a balanced rotor-bearing system. By considering turbulence and bearing liner deformation, we identified, for the first time, the onset of expansion of the dynamically unstable region. Additionally, we propose a recommended operating region restricted by the optimum boundary for the maximum load-carrying capacity while ensuring system stability. At a Reynolds number of 5,000, we determined the optimal conditions for achieving both the maximum load-carrying capacity and system stability. Finally, we demonstrated that optimal performance can be achieved not only through adjustments in the operating conditions but also through the selection of composite bearing materials.
期刊介绍：
Friction is a peer-reviewed international journal for the publication of theoretical and experimental research works related to the friction, lubrication and wear. Original, high quality research papers and review articles on all aspects of tribology are welcome, including, but are not limited to, a variety of topics, such as:
Friction: Origin of friction, Friction theories, New phenomena of friction, Nano-friction, Ultra-low friction, Molecular friction, Ultra-high friction, Friction at high speed, Friction at high temperature or low temperature, Friction at solid/liquid interfaces, Bio-friction, Adhesion, etc.
Lubrication: Superlubricity, Green lubricants, Nano-lubrication, Boundary lubrication, Thin film lubrication, Elastohydrodynamic lubrication, Mixed lubrication, New lubricants, New additives, Gas lubrication, Solid lubrication, etc.
Wear: Wear materials, Wear mechanism, Wear models, Wear in severe conditions, Wear measurement, Wear monitoring, etc.
Surface Engineering: Surface texturing, Molecular films, Surface coatings, Surface modification, Bionic surfaces, etc.
Basic Sciences: Tribology system, Principles of tribology, Thermodynamics of tribo-systems, Micro-fluidics, Thermal stability of tribo-systems, etc.
Friction is an open access journal. It is published quarterly by Tsinghua University Press and Springer, and sponsored by the State Key Laboratory of Tribology (TsinghuaUniversity) and the Tribology Institute of Chinese Mechanical Engineering Society.
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