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CFD를 이용한 수윤활 볼베어링의 구름 요소 주위의 마찰 토크분석

CFD-Based Flow Analysis of Rolling Elements in Water-Lubricated Ball Bearings

  • 조준현 (연세대학교 기계공학과) ;
  • 김충현 (한국과학기술연구원 바이오닉스 연구단)
  • Jo, Jun Hyeon (Dept. of Mechanical Engineering, Yonsei University) ;
  • Kim, Choong Hyun (Center for Bionic Systems Korea Institute of Science and Technology)
  • 투고 : 2013.04.30
  • 심사 : 2013.06.15
  • 발행 : 2013.08.30

초록

Water-lubricated ball bearings consist of rolling elements, an inner raceway, an outer raceway, a retainer, and an operating lubricant. In the water environment, ball bearings are required to sustain high loads at high speeds under poorly lubricated conditions. For the analysis of bearing behavior, friction torque is considered as the main factor at various flow rates, rotating speeds, and roughnesses between the rolling element and raceways. When the bearing operates at high rotating speeds, the friction torque between the raceway and rolling elements increases considerably. This frictional torque is an important factor affecting bearing reliability and life cycle duration. For understanding the flow conditions in the inner part of the bearing, this study focuses on the flow around the rotating and revolving rolling elements. A simple model of fluid flow inside the ball bearing is designed using the commercial CFD program ANSYS.

키워드

참고문헌

  1. Jeon, S. M., Kwak, H. D. and Kim, J. H., "Evaluation of Friction Torque for a Turbopump Ball Bearing," Journal of the KSTLE, Vol. 27, pp.25-33, 2011. https://doi.org/10.9725/kstle.2011.27.1.025
  2. Kim, D., Oh, I.-S., Hong, S.-W. and Kim, K., "A Computational Investigation of Airflow Structures Inside a Ball Bearing at High-Speed Rotation," Journal of the Korean Society for Precision, Vol. 28, pp. 745-750, 2011.
  3. Jo, J. H. and Kim, C. H., "Performance Test for the Static Loading Capacity of the Cryogenic Ball Bearing In The Turbo Pump," KSTLE spring Conference, pp. 13, 2012.
  4. Jo, J. H., Rhim, Y. C., Lee, S. C. and Kim, C. H., "Development of Cryogenic Test Rig for Ball-Bearing and Evaluation of the Performance of the Prototype Ball-Bearing of Turbo pump," Journal of the KSTLE, Vol. 28, pp. 167-172, 2012. https://doi.org/10.9725/kstle.2012.28.4.167
  5. Jo, J. H. and Kim, C. H., "Analysis of Fluid Flow Characteristics Around Rolling Element in Ball Bearings," Journal of the KSTLE, Vol. 28, pp. 278-282, 2012. https://doi.org/10.9725/kstle-2012.28.6.278
  6. Harris, T. A., Rolling Bearing Analysis, John Wiley & Sons, New York, 1966.

피인용 문헌

  1. vol.17, pp.2, 2014, https://doi.org/10.5293/kfma.2014.17.2.073