DOI QR코드

DOI QR Code

Flow Analysis in a Slipper Bearing for Swash Plate Type Axial Piston Pump

사판식 유압 피스톤 펌프용 Slipper Bearing내의 유동해석

  • Park, Tae-Jo (School of Mechanical & Aerospace Engineering, ERI, Gyeongsang National University) ;
  • Yoo, Jae-Chan (Doosan Mottrol Co., Ltd.)
  • 박태조 (경상대학교 기계항공공학부.공학연구원) ;
  • 유재찬 (두산모트롤(주))
  • Published : 2008.12.31

Abstract

In this paper, a CFD (Computational fluid dynamics) code, FLUENT is adopted to investigate accurate flow characteristics for a slipper bearing which is used swash plate type hydraulic axial piston pump. Static pressure and velocity distributions, and velocity vectors are plotted for different film thickness and slipper rotational velocity. In recess region, there exists a doughnut shaped vortex ring. The static pressure distributions are non-uniform and the flow fields are highly asymmetrical under bearing rotation. Therefore the numerical method adopted in this paper can be use in design of hydrostatic components and further studies are required.

Keywords

References

  1. Koc, E. and Hooke, C. J., 'Investigation into the Effects of Orifice Size, Offset and Overclamp Ratio on the Lubrication of Slipper Bearing', Tribology Int., Vol. 29, pp. 299-305, 1996 https://doi.org/10.1016/0301-679X(95)00044-5
  2. Koc, E. and Hooke, C. J., 'Considerations in the Design of Partially Hydrostatic Slipper Bearings', Tribology Int., Vol. 30, pp. 815-823, 1997 https://doi.org/10.1016/S0301-679X(97)00064-9
  3. Dzodzo, M., Braun, M. J. and Hendricks, R. C., 'Pressure and Flow Characteristics in a Shallow Hydrostatic Pocket with Rounded Pocket/Land Joints', Tribology Int., Vol. 29, pp. 69-76, 1999 https://doi.org/10.1016/0301-679X(95)00036-4
  4. Manring, N. D., Wray, C. L. and Dong, Z., 'Experimental Studies on the Performance of Slipper Bearings Within Axial-Piston Pumps', Trans. ASME, J. of Tribology, Vol. 126, pp. 511-518, 2004 https://doi.org/10.1115/1.1698936
  5. Huanlong, L., Jian, K., Guozhi, W., and Lanying, Y., 'Research on the Lubrication Characteristics of Water Hydraulic Slipper Friction Pairs', Proc. IMechE, J. of Engineering Tribology, Vol. 220, pp. 1559-1567, 2006
  6. Chen, X. D. and He, X. M., 'The Effect of the Recess Shape on Performance Analysis of the Gas-Lubricated Bearing in Optical Lithography', Tribology Int., Vol. 39. pp. 1336-1341, 2006 https://doi.org/10.1016/j.triboint.2005.10.005
  7. Brajdic-Mitidieri, P., Gosman, A. D., Ioannides, E. and Spides, H. A., 'CFD Analysis of a Low Friction Pocketed Pad Bearing', Trans. ASME, J. of Tribology, Vol. 127, pp. 803-812, 2005 https://doi.org/10.1115/1.2032990
  8. FLUENT, FLUENT 6.0 Manual, 2002
  9. 박태조, 전병수, '유압 피스톤 펌프의 피스톤과 실린더 사이의 윤활해석, 제1보 : 피스톤 형상에 의한 영향', 한국윤활학회지, Vol. 14, No. 1, pp. 64-69, 1998
  10. 박태조, '유압 피스톤 펌프의 피스톤과 실린더 사이의 윤활해석, 제2보 : 피스톤 왕복운동의 영향', 한국윤활학회지, Vol. 17, No. 6, pp. 435-440, 2001