Numerical Analysis of Grease Film Characteristics in Tapered Roller Bearing Subject to Shaft Deflection

Document Type : Original Article

Authors

School of Mechatronical Engineering, Northwestern Polytechnical University, Xi’an 710072, China

Abstract

The shaft deflection is one of critical factors that deteriorate the grease lubrication state inside the tapered roller bearings (TRBs). So, in this paper, on the premise of the TRB subjected to the combined loads and the shaft is deflected, the grease lubrication model at the TRB contacts was constructed, in which the interaction loads, linear and angular displacements of the bearing parts were involved. Then the grease film characteristics were numerically analyzed from the perspective of the whole bearing to clarify the negative effects of the shaft deflection on grease film characterizes. The results show that the effect of the shaft deflection on the load distribution in the absence of the radial load is greater than that in the presence of the radial load. The angular misalignment of the roller is mainly affected by the deflection. The deflection results in an irregular film shape and pressure profile at the TRB contacts, and induces a significant pressure spike and necking feature at the roller-end.

Keywords

References

1. Lugt, P. M., “A review on grease lubrication in rolling bearings”, Tribology Transactions, Vol. 52, No. 4, (2009), 470-480. doi: 10.1080/10402000802687940
Journal of Tribology, Vol. 4, No. 2, (1969), 294-300. doi: 10.1115/1.3554918
3. Ebadi, P., Soleimani, M., and Beheshti, M., “Design methodology of base plates with column eccentricity in two directions under bidirectional moment”, Civil Engineering Journal, Vol. 4, No. 11, (2018), 2773-2786. doi: 10.28991/cej-03091197
4. Gurumoorthy, K. and Ghosh, A., “Failure investigation of a taper roller bearing: a case study”, Case Studies in Engineering Failure Analysis, Vol. 1, No. 2, (2013), 110-114. doi: 10.1016/j.csefa.2013.05.002
5. Dzyura, V. O., Maruschak, P. O., Zakiev, I. M., and Sorochaka, A. P., “Analysis of inner surface roughness parameters of load-carrying and support elements of mechanical systems”, International Journal of Engineering, Transactions B: Applications, doi. 30, No. 8, (2017), 1170-1175. Doi: 10.5829/ije.2017.30.08b.08
6. Zantopulos, H., “The effect of misalignment on the fatigue life of tapered roller bearings”, Journal of Tribology, Vol. 94, No. 2, (1972), 181-186. doi: 10.1115/1.3451678
7. Andréason, S., “Load distribution in a taper roller bearing arrangement considering misalignment”, Tribology, Vol. 6, No. 3, (1973), 84-92. doi: 10.1016/0041-2678(73)90241-8
8. Liu, J. Y., “Analysis of tapered roller bearings considering high speed and combined loading”, Journal of Tribology, Vol. 98, No. 4, (1976), 564-572. doi: 10.1115/1.3452933
9. De Mul, J. M., Vree, J. M., and Maas, D. A., “Equilibrium and associated load distribution in ball and roller bearings loaded in five degrees of freedom while neglecting friction-part II”, Journal of Tribology, Vol. 111, No. 1, (1989), 149-155. doi: 10.1115/1.3261865
10. Tong, V. C. and Hong, S. W., “Characteristics of tapered roller bearing subjected to combined radial and moment loads”, International Journal of Precision Engineering and Manufacturing, Vol. 1, No. 4, (2014), 323-328. doi: 10.1007/s40684-014-0040-1
11. Tong, V. C. and Hong, S. W., “The effect of angular misalignment on the running torques of tapered roller bearings”, Tribology International, Vol. 95, (2016), 76-85. doi: 10.1016/j.triboint.2015.11.005
12. Tong, V. C. and Hong, S. W., “The effect of angular misalignment on the stiffness characteristics of tapered roller bearings”, Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science, Vol. 231, No. 4, (2017), 712-727. doi: 10.1177/0954406215621098
13. Kushwaha, M., Rahnejat, H., and Gohar, R., “Aligned and misaligned contacts of rollers to races in elastohydrodynamic finite line conjunctions”, ARCHIVE Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 1989-1996, Vol. 216, No. 11, (2002), 1051-1070. doi: 10.1243/095440602761609434
14. Panovko, M. Y., “Numerical modeling an elastohydrodynamic contact of shaped rollers with allowance for misalignment of their axes”, Journal of Machinery Manufacture & Reliability, Vol. 38, No. 5, (2009), 460-466. doi: 10.3103/S1052618809050094
15. Liu, X. L., Yang, P., and Yang, P. R., “Analysis of the lubricating mechanism for tilting rollers in rolling bearings”, Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology, Vol. 225, No. 11, (2011), 1059-1070. doi: 10.1177/1350650111413839
16. Liu, X. L., Li, S. Y., Yang, P., and Yang, P. R., “On the lubricating mechanism of roller skew in cylindrical roller bearings”, Tribology Transactions, Vol. 56, No. 6, (2013), 929-942. doi: 10.1080/10402004.2013.812760
Z. H. Wu et al. / IJE TRANSACTIONS A: Basics Vol. 33, No. 7, (July 2020) 1403-1412 1411
2. Harris, T. A., “The effect of misalignment on the fatigue life of cylindrical roller bearings having crowned rolling members”,
1412 Z. H. Wu et al. / IJE TRANSACTIONS A: Basics Vol. 33, No. 7, (July 2020) 1403-1412
17. Wu, Z., Xu, Y., and Liu, K., “The analysis on grease lubrication at two tapered bodies contact considering surface roughness”, Forschung im Ingenieurwesen, Vol. 83, No. 3, (2019), 339-350. doi: 10.1007/s10010-019-00350-9
18. Palmgren, A., “Ball and Roller Bearing Engineering”, 3rd Edition, SKF Industries Inc., (1959).
19. Lundberg, G., “Elastische Berührung Zweier Halbräume”, Forschung Auf Dem Gebiet Des Ingenieurwesens, Vol. 10, No. 5, (1939), 201-211. doi: 10.1007/BF02584950
20. Shi, X. and Wang, L. Q., “TEHL analysis of aero-engine mainshaft roller bearing based on quasi-dynamics”, Journal of Mechanical Engineering, Vol. 52, No. 3, (2016), 86-92. doi: 10.3901/jme.2016.03.086
21. Huang, C., Wen, S., and Huang, P., “Multilevel solution of the elastohydrodynamic lubrication of concentrated contacts in spiroid gears”, Journal of Tribology, Vol. 115, No. 3, (1993), 481-486. doi: 10.1115/1.2921663.
22. Liu, S., Wang, Q., and Liu, G., “A versatile method of discrete convolution and FFT (DC-FFT) for contact analyses”, Wear, Vol. 243, No. 1-2, (2000), 101-111. doi: 10.1016/S0043-1648(00)00427-0
International Journal of Engineering
Volume 33, Issue 7
TRANSACTIONS A: Basics
July 2020
Pages 1403-1412

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