드라이브 ㆍ 컨트롤 (Journal of Drive and Control)

  • 제10권3호
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  • Pages.7-13
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  • 2013
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  • 2671-7972(pISSN)
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  • 2671-7980(eISSN)
유공압건설기계학회 (The Korean Society for Fluid Power and Construction Equipment)
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유압 베인 펌프에서의 탄성유체윤활 해석

Elastohydrodynamic Lubrication Analysis in Hydraulic Vane Pump

  • Park, T.J. (School of Mechanical Engineering, Engineering Research Institute, Gyeongsang National University)
  • 투고 : 2013.05.09
  • 심사 : 2013.08.15
  • 발행 : 2013.09.01
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초록

Hydraulic vane pumps are widely used in various hydraulic systems because of its compactness and light weight. It is well known that the vanes and cam ring are separated by very thin liquid films which result in the EHL state. Contrary to the case of cylindrical roller bearings, the inlet and side boundary pressures are much higher than the atmospheric pressure. In this paper, a numerical solution of the EHL of finite line contacts between the cam ring and vane tip with profiled ends is presented. Using a finite difference method with non-uniform grids and the Newton-Raphson method, converged solutions are obtained for moderate load and material parameters. The EHL pressure distribution and film shape are considerably affected by pump delivery pressure and the side boundary condition applied. Both the maximum pressure and the minimum film thickness always occurred near the edge regions. The present results can be used in the design of optimum vane profile in hydraulic vane pump.

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참고문헌

  1. Esposito, A., Fluid Power with Applications, 7th ed., Prentice Hall, 2009.
  2. Dowson, D. and Higginson, G. R., "A Numerical Solution to the Elastohydrodynamic Problem," J. of Mech. Eng. Sci., Vol. 1, pp. 7-15, 1959.
  3. Hamrock, B. J. and Dowson, D., "Isothermal Elastohydrodynamic Lubrication of Point Contacts, Part 3 : Fully Flooded Results," J. of Lub. Tech., Vol. 99, pp. 264-276, 1977. https://doi.org/10.1115/1.3453074
  4. Chen, X., Sun, H. and Shen, X., "Review and Prospect of Developments in EHL of Finite Line Contacts," Proc. of IUTAM Sympo. on Elastohydrodynamics and Micro-elastohydrodynamics, pp. 95-106, 2004.
  5. Wymer, D. G. and Cameron, A., "Elastohydrodynamic Lubrication of a Line Contact," Proc. IMechE, Vol. 188, pp. 221-231, 1973-74. https://doi.org/10.1243/PIME_PROC_1974_188_024_02
  6. Mostofi, A. and Gohar, R., "Elastohydrodynamic Lubrication of Finite Line Contacts," J. of Lub. Tech., Vol. 105, pp.598-604, 1983. https://doi.org/10.1115/1.3254683
  7. Park, T. J. and Kim, K. W., "Elastohydrodynamic Lubrication of a Finite Line Contacts," Wear, Vol. 223, No. 1-2, pp. 102-109, 1998. https://doi.org/10.1016/S0043-1648(98)00317-2
  8. Park, T. J., "Numerical Analysis of Misaligned Finite Line Contacts EHL Problem", J. of KSTLE, Vol. 26, pp. 263-271, 2010.
  9. Park, T. J. and Kim, K. K., "A Numerical Analysis of the Elastohydrodynamic Lubrication of Elliptical Contacts," Wear, Vol. 136, pp. 299-312, 1990. https://doi.org/10.1016/0043-1648(90)90153-2
  10. Heydari, M. and Gohar, R., "The Influence of Axial Profile on Pressure Distribution in Radially Loaded Rollers," J. of Mech. Eng. Sci., Vol. 21, pp. 381-388, l979. https://doi.org/10.1243/JMES_JOUR_1979_021_067_02