Numerical Simulation of a Slipper with Retainer for Axial Piston Pumps and Motors under Swashplate Vibration

Kazama, Toshiharu

doi:10.5739/jfpsij.10.18

Cited by 2 publications

(1 citation statement)

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“…The hybrid model fills the gap between these two extreme models and has been validated by experimental data for thrust washers and hydrostatic bearings [22], although the model is limited under no-revolution conditions in the steady state. Later, the model was extended to include the dynamic motion and revolution of the pad [23,24], which enabled simulation of the three-dimensional motion of the pad and an estimation of the tribological characteristics of the slipper.…”

Section: Theoretical Modelmentioning

confidence: 99%

Numerical Simulation of a Slipper Model with Multi-Lands and Grooves for Hydraulic Piston Pumps and Motors in Mixed Lubrication

Kazama

2019

Lubricants

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A theoretical model of a slipper with multi-lands and multi-grooves for swashplate type axial piston pumps and motors was established, including surface interactions. Further, a numerical simulation was conducted under an unsteady state and mixed lubrication conditions. Four model configurations were considered: A slipper with a single main land; a slipper with inner and main lands and a groove; a slipper with outer and main lands and a groove; and a slipper with inner, main, and outer lands with two grooves. Numerical solutions were obtained across a wide range of operating conditions in terms of center clearance, pad attitude, contact pressure, flow rate, friction torque, power loss, and stiffness. The motion and characteristics were differentiated into two groups: Slippers with a single-land and an annex inner-land; and slippers with an annex outer-land and a triple-land. The single-land and annex inner-land slippers exhibited smaller pad swing, whereas the triple-land and annex outer-land slippers reduced contact pressure and power loss.

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Section: Theoretical Modelmentioning

confidence: 99%