...Qi Chen; Kai Zhang; Yabin Zhang; Qiangming Ding; Yuhang Zhu; Kai Feng To satisfy the large-scale and high-power demands of wind turbines, planetary gear journal bearings (PGJBs) have been applied in large wind turbine gearboxes (WTGs), as an alternative to traditional rolling bearings, due...

...Che Wang; Zhaodong Zhang; Yuhua Huang; Zibo Zhao; Hua Zhong; Jianhua Wu The journal bearing is pivotal for the advancement of refrigerant compressors. While the gas–oil lubrication mechanism has been explored in some previous studies, the dynamic coefficients of gas–oil-lubricated bearings...

...] Jakobsson , B. , and Floberg , L. , 1957 , The Finite Journal Bearing, Considering Vaporization , Gumperts Förlag . [23] Olsson , K.-O. , 1965 , Cavitation in Dynamically Loaded Bearings , Scandinavian University Books , Goteborg, Sweden . [24] Gu , C. , Sheng , X...

... design and technology journal bearings rolling element bearings tribological systems Modeling of the rotor-bearing housing system is essential for optimizing performance, diagnosing faults, reducing noise and vibration, ensuring safety, and enhancing resource efficiency in large rotating...

...Nick Morris; Ramin Rahmani; Homer Rahnejat; Bharat Bhushan Surfaces of air foil thrust and journal bearings in high-speed turbomachinery are coated to improve their operational integrity, particularly when the aerodynamic load-carrying capacity is reduced during instances of startup and shutdown...

... 09 04 2024 06 06 2024 Graphical Abstract Figure water lubrication secondary lubricating medium oil supply setting oil supply rate CFD simulation hydrodynamic lubrication journal bearings lubricants mixed lubrication viscosity Water has never been ruled out...

... 07 2023 26 02 2024 27 02 2024 25 03 2024 Graphical Abstract Figure bearing design and technology bearings elastohydrodynamic lubrication fluid film lubrication hydrodynamic lubrication journal bearings There is a constant demand for heavy rotating...

... system shaft-bearing system shaft dynamics scratched shaft water-lubricated bearing start-up process anti-interference performance bearings fluid film lubrication fluid friction hydrodynamic lubrication journal bearings At present, water-lubricated bearings [ 1 , 2 ] have been...

... in Water-Lubricated Bearing-Shaft System ,” Tribol. Int. , 150 , p. 106336 . 10.1016/j.triboint.2020.106336 [7] König , F. , Ouald Chaib , A. , Jacobs , G. , and Sous , C. , 2019 , “ A Multiscale-Approach for Wear Prediction in Journal Bearing Systems–From Wearing-In Towards...

....2010.11.006 [4] Gao , S. Y. , Shi , Y. G. , Xu , L. S. , Chen , H. , and Cheng , K. , 2019 , “ Investigation on Influences of Herringbone Grooves for the Aerostatic Journal Bearings Applied to Ultra-High-Speed Spindles ,” Proc Inst. Mech. Eng. C-J. Mech. , 233 ( 16 ), pp. 5795...

...-lubricated journal bearings, a turbulent flow model considering cavitation effect was proposed on the basis of two-phase flow theory. The simulation was conducted to show the influence of turbulence and cavitation effects on the static characteristics of the water-lubricated journal bearing. The proposed...

.... , Claro , J. C. P. , and Fillon , M. , 2012 , “ Experimental Comparison of the Performance of a Journal Bearing With a Single and a Twin Axial Groove Configuration ,” Tribol. Int. , 54 ( 10 ), pp. 1 – 8 . 10.1016/j.triboint.2012.04.026 [2] Miyanaga , N. , and Tomioka , J...

... for publication in the J ournal of T ribology . 07 07 2022 09 06 2023 10 06 2023 17 07 2023 bearing design and technology hydrodynamic lubrication journal bearings tribological systems University of Queensland 10.13039/501100001794 UQ research training scholarship...

...Subrata Barman; Kritesh Kumar Gupta; Subrata Kushari; Sudip Dey This investigation presents the deterministic and stochastic responses of the journal bearing with a two-layered porous bush. Pressure equations in the porous layers and modified Reynolds equations in the clearance region are governed...

... and load capacity of the coupled journal-thrust bearing and the laminar flow assumption is no longer applicable to the actual operating conditions of the water-lubricated bearings at a high rotation speed. In addition, optimal micro groove depths for both journal bearing and thrust bearing exist to reach...

... and Valve-Train ,” Proc. Inst. Mech. Eng. J.: J. Eng. Tribol. , 232 ( 6 ), pp. 749 – 756 . 10.1177/1350650117727231 [10] Sander , D. E. , Allmaier , H. , Priebsch , H. H. , Witt , M. , and Skiadas , A. , 2016 , “ Simulation of Journal Bearing Friction in Severe Mixed...

... lubrication journal bearings National Natural Science Foundation of China 10.13039/501100001809 52005126 U2141210 Bump foil bearing, consisting of the top foil (a non-closed cylindrical foil), bump foil, and bearing sleeve, is one of the most widely applied gas-lubricated bearings...

..., and in transportation machinery such as automobiles and aircraft. For example, double row tapered roller bearings are often used as axle bearings in railway vehicles, which require high reliability. bearings journal bearings rolling rolling element bearings rolling fatigue 30 08 2022 13 12...

...Chunxing Gu; Li Dai; Di Zhang In order to explore the influence of different acceleration and deceleration forms on the bearing performance during acceleration and deceleration, an isothermal and mixed lubrication model for journal bearings was established. In this model, the fluid mechanics...

... ] and Feng et al. [ 30 ] use the Reynolds’ equation of lubrication theory to calculate the stiffness and damping coefficients due to translational and angular motions of a water lubricated hydrodynamic journal bearing. The influence of laminar and turbulent flow conditions is investigated as well...