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Application of Bionic Tribology in water-lubricated bearing:A Review

Journal of Bionic Engineering 2022年第4期19卷 902-934页

作者： Xuefei Li Zhiwei Guo Qiren Huang Chengqing Yuan School of Transportation and Logistics Engineering Wuhan University of TechnologyWuhan 430063China National Engineering Research Center for water Transport Safety Reliability Engineering InstituteWuhan 430063China

water-lubricated bearing has become the development trend in the future because of its economy and environmental friendliness.The poor friction performance under low speed and heavy load seriously limits the popularization and application of water-lubricated bearings.Learning from nature,the phenomenon of low friction and wear in nature has aroused great interest of scientists,and a lot of research has been carried out from mechanism analysis to bionic application.In this review,our purpose is to provide guiding methods and analysis basis for the bionic design and theoretical research of anti-friction and anti-wear of water-lubricated bearings.The development of water-lubricated bearing materials are described.Some typical examples of natural friction reduction and drag reduction are introduced in detail,and several representative preparation methods are listed.Finally,the application status of bionic tribology in water-lubricated bearings is summarized,and the future development direction of water-lubricated bearings is prospected.

关键词： water-lubricated bearing Bionic tribology bearing material Friction Wear

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Investigation on the stability and anti-eccentric load margin of a novel structure bearing lubricated by low viscosity medium

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Science China(Technological Sciences) 2022年第7期65卷 1613-1633页

作者： XIE ZhongLiang JIAO Jian YANG Kang HE Tao Department of Engineering Mechanics Northwestern Polytechnical UniversityXi'an 710072China Research&Development Institute of Northwestern Polytechnical University in Shenzhen Shenzhen 518057China School of Mechanical-Electric Engineering Xidian UniversityXi'an 710071China Wuhan Second Ship Design and Research Institute Wuhan 430205China

The paper studies the anti-eccentric load margin of a novel structure bearing lubricated by low viscosity medium. The lubrication dynamic model considering journal inclination angle is established. The effects of different speeds, loads, and tilted angles on the interface attributes of the bearing under typical working conditions are studied. The results show that the special structure bearing has self-stability margin of anti-tilted and anti-eccentric load. Particularly under different speed conditions, analyses show that the eccentric load has little influence on the static/dynamic characteristics of the bearing. Under the same conditions, the stability margin of the bearing is higher than that of traditional bearings. The research provides a theoretical basis for the application of such kinds of special structure bearings.

关键词： water-lubricated bearing tilted angle anti-eccentric load margin lubrication performance

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Insight into the Lubrication Performance of Biomimetic Porous Structure Material for water-lubricated bearings

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Journal of Bionic Engineering 2023年第5期20卷 1905-1916页

作者： Xuefei Li Zhiwei Guo Qiren Huang Chengqing Yuan School of Transportation and Logistics Engineering Wuhan University of TechnologyWuhan430063China National Engineering Research Center for water Transport Safety Reliability Engineering InstituteWuhan430063China

water-lubricated bearings have great advantages in the application of ship tail bearings due to the characteristics of green,pollution-free,and sustainable.However,the poor wettability of water-lubricated materials,as well as the low viscosity and poor load-carrying capacity of water,resulting in poor lubricating film integrity and short material service life under low-speed,heavy-load,start-stop conditions,which limits its application.To study the relationship between wettability and lubrication state and improve the lubrication performance of Si_(3)N_(4) under water lubrication conditions,the characteristic parameters that determine the hydrophilicity of Sphagnum were detected and extracted,and the bionic Si_(3)N_(4) model was established using Material Studio.Then,the molecular dynamic behavior and tribological properties of different Si_(3)N_(4) models were simulated and analyzed.Pore structure affects the spreading and storage of water on the material surface and changes the wettability of the material.Under the condition of water lubrication,better wettability and water storage promote the formation of water film,effectively improve the lubrication state of the material,and improve its bearing performance.

关键词： Molecular dynamic water-lubricated bearing Wettability Friction

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智能水润滑轴承的设计与可行性综述

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Journal of Marine Science and Application 2022年第3期21卷 23-45页

作者：薛恩驰郭智威 Hongyuan Zhao 袁成清 Key Laboratory of Marine Power Engineering&Technology(Ministry of Transport) Wuhan University of TechnologyWuhan 430063PR China Reliability Engineering Institute National Engineering Research Center forWater Transportation SafetyWuhan 430063PR China Institute of Functional Surfaces University of LeedsLS29JTLeedsEnglandUK

water-lubrication bearings are critical components in ship operation.However,studies on their maintenance and failure detection are highly limited.The use of sensors to continually monitor the working operation of bearings is a potential approach to solve this problem,which is collectively called intelligent bearings.In this literature review,the recent progress of electrical resistance strain gauges,Fiber Bragg grating,triboelectric nanogenerators,piezoelectric nanogenerators,and thermoelectric sensors for in-situ monitoring is summarized.Future research and design concepts on intelligent water-lubrication bearings are also comprehensively discussed.The findings show that the accident risks,lubrication condition,and remaining life of water-lubricated bearings can be evaluated with the surface temperature,coefficient of friction,and wear volume monitoring.The research work on intelligent water-lubricated bearings is committed to promoting the development of green,electrified,and intelligent technologies for ship propulsion systems,which have important theoretical significance and application value.

关键词： water-lubricated bearing Embedded sensor Intelligent bearing Wear monitoring Ship operations In-situ monitoring

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