Transient EHL Analysis on Spur Gear Teeth with Consideration of Gear Kinematics

  • Koo, Young-Pil (School of Mechanical Engineering, Pukyong National University)
  • Published : 2004.08.01

Abstract

Transient 3-dimensional elasto-hydrodynamic lubrication (EHL) analysis is performed on the contacting teeth surfaces of involute spur gears. Kinematics of the gear and the pinion are taken into account to get accurate geometric clearance around the EHL region of the contacting teeth. The surface pressure and film thickness distribution for the whole contact faces in a lubricated condition at several time steps are obtained through the analysis. Besides the pressure spike at the outlet region, a representative phenomenon in EHL regime, the pressure at the inlet region is slightly higher than that of the center region. The film thickness of transient condition is thicker than that of steady condition.

Keywords

References

  1. Seol I., Chung, S., 2000, Simulation of Meshing for the Spur Gear Drive with Modified Tooth Surfaces, KSME International Journal, Vol. 14 No. 5, pp. 490-498 https://doi.org/10.1007/BF03185651
  2. Lee, Sang-Kwon, 1999, Application of the L-Wigner Distribution to the Diagnosis of Local Defects of Gear Tooth, KSME International Journal, Vol. 13 No. 2, pp. 144-157 https://doi.org/10.1007/BF02943666
  3. Jiang, Q. Y. and Barber, G. C., 1999, 'Modeling of Reaction Film Failure in Gear Lubrication,' Wear, Vol. 231, pp. 71-76 https://doi.org/10.1016/S0043-1648(99)00114-3
  4. Murakawa, M., Komori, T., Takeuchi, S., and Miyoshi, K., 1999, 'Performance of a Rotating Gear Pair Coated with an Amorphous Carbon Film Under a Loss-of-Lubrication Condition,' Surface and Coatings Technology, Vol. 120-121, pp. 646-652 https://doi.org/10.1016/S0257-8972(99)00437-5
  5. Lyu, S., Inoue, K., Deng, G., and Kato, M., 1998, Effect of Surface Treatments on the Strength of Carburized Gears An Application of Fracture Mechanics, KSME International Journal, Vol. 12 No. 2, pp. 206-214
  6. Wu, S. and Cheng, H. S., 1993, 'Sliding Wear Calculation in Spur Gears,' Journal of Tribology, Vol. 115, pp. 493-500 https://doi.org/10.1115/1.2921665
  7. Dowson, D., 1995, 'Elastohydrodynamic and micro-elastohydrodynamic lubrication,' Wear, Vol. 190, pp. 125-138 https://doi.org/10.1016/0043-1648(95)06660-8
  8. Larsson, R., 1997, 'Transient Non-Newtonian Elastohydrodynamic Lubrication Analysis of an Involute Spur gear,' Wear, Vol. 207, pp. 67-73 https://doi.org/10.1016/S0043-1648(96)07484-4
  9. Dowson, D. and Higginson, G. R., 1966, 'Elastohydrodynarnic Lubrication, the Fundamentals of Roller and Gear Lubrication,' Pergamon, Oxford
  10. Hamrock, B. J., 1994, 'Fundamentals of Fluid Film Lubrication,' McGRAW-HILL, pp. 141-165
  11. Roelands, C. J. A, 1966, Correlational Aspects of the Viscosity-Temperature-Pressure Relationship of Lubricating Oils, Doctoral thesis, Technische Hogeschool te Delt, Netherlands
  12. Koo, Y. P., Cho, Y. J., Lee, D. W., 2002, '3-Dimensional Elastohydrodynamic Lubrication Analysis on the Cam-Roller Contact with Consideration of Roller Profiling,' JSME International Journal, Vol. 45(C), pp. 316-322 https://doi.org/10.1299/jsmec.45.316