Filters








1 Hit in 0.037 sec

NUMERICAL SIMULATION OF A SLIPPER MODEL FOR WATER HYDRAULIC PUMPS/MOTORS IN MIXED LUBRICATION

Toshiharu KAZAMA
2005 Proceedings of the JFPS International symposium on fluid power  
This paper presents a time-dependent mathematical model of a hybrid (hydrostatic/hydrodynamic) thrust pad bearing as a slipper of swash-plate type axial piston pumps and motors for the use of tap water under mixed and fluid film lubrication condition. Effects are examined of the load eccentricity, time-lag of changes in the supply pressure and load, surface roughness, recess volume, and the revolution radius. The bearing's motion is simulated three-dimensionally, including roughness interaction
more » ... ughness interaction and asperity contact. Solutions are obtained regarding the friction, flow rate, power loss, and stiffness. Calculations indicate that the eccentric load causes local contacts. The preceding change in the load poses a larger motion of the bearing. The hydrodynamic effect becomes marked as the revolution radius increases. As the recess volume increases, the bearing stiffness decreases.
doi:10.5739/isfp.2005.509 fatcat:tmlwbsawtrgy7hlfqa3rr6jnra