Hydrodynamic Lubrication Calculation for Slipper/swash Plate Pair with Bionic Non-smooth Concave Surface

doi:10.3901/JME.2015.24.153

Abstract

Abstract: A hydrodynamic lubrication model of slipper/swash-plate pair with bionic non-smooth concave surface is established. The CFD method and the orthogonal experiment method are employed to investigate the effect of operating parameters (film thickness、rotate speed) and geometric parameters (concave shape、area ratio、depth to diameter ratio) on the hydrodynamic lubrication performance and the load carrying capacity of seawater film. The research results show that the load carrying effect from concave surface is a combination of static pressure distribution and dynamic pressure distribution, and the dynamic pressure effect caused by the relative motion of slipper-pad and swash-plate with bionic non-smooth concave surface plays a main role; the sequence of operating parameters and geometric parameters for load carrying capacity is rotate speed> film thickness> concave shape> depth to diameter ratio> area ratio; the triangular prismatic concave with film thickness of 30 micrometers、speed of 3 000 r/min、area ratio of 20% and depth to diameter ratio of 0.5 is the optimal level combination. The research results provide reference for the design of swash-plate with bionic non-smooth surface of high pressure seawater axial piston pump.

Key words: bionic concave, load carrying capacity, pressure distribution, slipper/swash-plate pair, water lubrication

LIANG Yingna, GAO Dianrong, WU Shaofeng. Hydrodynamic Lubrication Calculation for Slipper/swash Plate Pair with Bionic Non-smooth Concave Surface[J]. Journal of Mechanical Engineering, 2015, 51(24): 153-160.

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