Elastohydrodynamic lubrication characteristics of surface-textured slipper bearing in an axial piston pump

Xiao, Chaoang; Tang, Hesheng

doi:10.1007/s40430-020-02282-w

Cited by 10 publications

(9 citation statements)

References 26 publications

(28 reference statements)

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“…In this case, ISO VG32 hydraulic oil is used as the working medium for the pump, and the oil viscosity–temperature equation can be written as follows 16 where T is the fluid film temperature.…”

Section: Methodsmentioning

confidence: 99%

“…In 2020, Tang’s research group developed a transient thermal elastohydrodynamic textured slipper bearing model with consideration of thermal distortion and deformation caused by the hydrostatic pressure. 16 This model calculates the hydrodynamic pressure and temperature distribution of the slipper pad for fluid friction operation only. The microhydrodynamic effects and the asperities contact friction acting on the slipper pad in mixed friction regime is neglected.…”

Section: Introductionmentioning

confidence: 99%

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Evaluation and optimization of axial piston pump textured slipper bearings with spherical dimples based on hybrid genetic algorithm

Tang

Ren

Xiang

2020

Proceedings of the Institution of Mechanical Engineers, Part J:

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The spherical dimple texture have been designed on the rough surface of slipper bearing for improving the lubrication performance in axial piston pump. In this work, we have investigated and optimized the structure parameters of textures to obtain minimum friction coefficient as well as maximum loading capacity. Optimization of the geometry parameters of dimple texture by the integration of a hybrid evolutionary optimization method based on the sequential quadratic programming and genetic algorithm. Parametric analysis is applied for the evaluation of the impact level of geometry parameters on lubrication performance. The results shows that hybrid genetic method can be used for the optimization of slipper bearing with spherical dimple textures to generate lower friction coefficient and greater capacity of load carrying. The carrying capacity and friction coefficient of slipper bearing demonstrate a 64.8% and 4.5% improvements after multi-objective optimization. When the texture radius and depth are set to 18 µm and 0.8 µm, there exists the greatest load carrying force and lowest friction coefficient. This work presents a key designing guide for axial piston pump textured slipper bearings.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Evaluation and optimization of axial piston pump textured slipper bearings with spherical dimples based on hybrid genetic algorithm

Tang

Ren

Xiang

2020

Proceedings of the Institution of Mechanical Engineers, Part J:

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“…Considering the symmetry of the bearing, 24 only half of the symmetric integration area is integrated, and the integral area S 1 can be obtained as follows…”

Section: Mathematical Model Of the Starting Torquementioning

confidence: 99%

Research on the mathematical modelling of the starting torque of self-lubricating spherical plain bearings

Wang

Chen

Zhou

et al. 2021

Proceedings of the Institution of Mechanical Engineers, Part C:

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The starting torque of self-lubricating spherical plain bearings (SSPBs) is a key parameter for evaluating the performance of bearings. Therefore, the starting torque of SSPBs should be controlled to within an allowable range. In this paper, the starting torque generation mechanism is analyzed, and the critical load for the separation of the liner from the outer spherical surface of the inner ring is determined. A mathematical model of the starting torque is established; the experimental and theoretical results of the starting torque are compared and analyzed, and then the accuracy of the mathematical model is evaluated by the deterministic coefficient R2. The research reveals that a critical load exists for the starting torque. Below the critical load, the starting torque is dependent on the outer spherical radius of the inner ring, bearing wrap angle, and liner parameters such as the compressive elastic modulus, friction coefficient, and precompression of the liner; however, the starting torque is independent of the radial load. Above the critical load, the starting torque is also dependent on the radial load. The research results provide a theoretical basis for the design and application of bearings.

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“…Various textures have been designed, such as triangles, 6–10 rectangles, 1,6,11 rhombuses, 7 squares, 12–16 semiellipsoids, 2,6,17 sphericals, 3,7,12,17–21 cylinders, 7,22,23 and composite textures. 12,24 They have been applied to hydrostatic journal bearings, 12 gas-foil thrust bearings, 1 slider bearings, 20,21 ship shaftless rim-driven thrusters, 6 three-cylinder ethanol engines, 18 engine crankshaft bearings, 2 and porous bearings.…”

Section: Introductionmentioning

confidence: 99%

Numerical analysis of the effect of texture on the steady-state characteristics of tilting pad journal bearings

Wei

Jiao

2023

Proceedings of the Institution of Mechanical Engineers, Part J:

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This work aims to study the effect of semi-ellipsoid texture on the bearing load capacity and maximum oil film temperature of tilting pad journal bearings. It has been shown that surface texture can improve the steady-state performance of bearings, but there are few studies on tilting pad journal bearings. A thermal elastohydrodynamic model of tilting pad journal bearings have been developed to support the analysis and solved by the finite difference method. The calculation results of the model are in good agreement with the simulation results of MADYN 2000 software, which proves the validity of the model. The effects of texture distribution, depth, radius, and density on the characteristics of tilting pad journal bearings were studied and compared with those of untextured tilting pad journal bearings. The results show that texture can significantly enhance or weaken the steady-state characteristics of tilting pad journal bearings, which is related to the texture parameters. This work provides a reference for the design of tilting pad journal bearings.

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Elastohydrodynamic lubrication characteristics of surface-textured slipper bearing in an axial piston pump

Cited by 10 publications

References 26 publications

Evaluation and optimization of axial piston pump textured slipper bearings with spherical dimples based on hybrid genetic algorithm

Evaluation and optimization of axial piston pump textured slipper bearings with spherical dimples based on hybrid genetic algorithm

Research on the mathematical modelling of the starting torque of self-lubricating spherical plain bearings

Numerical analysis of the effect of texture on the steady-state characteristics of tilting pad journal bearings

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