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Influence of Vibration Load on Elastohydrodynamic Lubrication of Texture Surface

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Category: Geotechnical and mining mechanical engineering, machine building

Last Updated on 22 June 2016

Published on 22 June 2016

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Authors:

Xiang Han, China University of Mining and Technology; Xuzhou Institute of Technology, Xuzhou, Jiangsu, China

Abstract:

Purpose. The study of the influence of vibration load on elastohydrodynamic lubrication of textured surface by numerical calculation.

Methodology. Based on the elastohydrodynamic lubrication model of the textured surface subjected to vibration and impact load and its solution, a series of phenomena were discussed.

Findings. The research showed that the instantaneous oil film of the textured surface has a similarity of the thickness time variance and similarity of pressure time variance in a vibration load excitation cycle. The texture in the low-pressure region has little effect on the thickness and pressure distribution of the oil film, but the one in the high-pressure region has an obvious influence on the thickness and pressure distribution of the oil film and its dynamic pressure effect is significant.

Originality. In the whole calculation region, the number of the pressure peaks is related to the one of the texture in the high pressure region. The study showed that the maximum pressure and the average friction coefficient of the oil film increases and the minimum film thickness decreases with the increase of the load amplitude. The maximum pressure, minimum thickness and the average friction coefficient of the oil film decrease with the increase of the vibration frequency.

Practical value. Research results are of importance for the design of the texture of the surface bearing vibration load.

References / Список літератури

1. Choi, J., Kim, S.S., Rhim, S.S. and Choi, J.H., 2012. Numerical modeling of journal bearing considering both elastohydrodynamic lubrication and multi-flexible-body dynamics. International Journal of Automotive Technology, vol. 13, no. 2, pp. 255‒261.

2. Yang, P., Jin, Z.M., Liu, F. and Dowson, D., 2004. On the time-dependent, thermal and non-Newtonian elastohydrodynamic lubrication of line contacts subjected to normal and tangential vibrations. Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology, vol. 218, no.2, pp. 71‒82.

3. Venner, C. and Wijnant, Y., 2005. Validation of EHL contact predictionsunder time varying load. Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology, vol. 219, no.219, pp. 1‒13.

4. Zhang, B., Huang, W., Wang, J. and Wang, X., 2013. Comparison of the effects of surfacetexture on the surfaces of steel and UHMWPE. Tribology International, vol. 65, no.3, pp. 138‒145.

5. Ding, Q., Wang, L., Wang, Y., Wang, S., Hu, L. and Xue, Q., 2011. Improved tribological behavior of DLC films under water lubrication by surface texturing. Tribology Letters, vol. 41, no.2, pp. 439‒449.

6. Dong, Q. and Zhou, K., 2014. Elastohydrodynamic lubrication modeling for materials with multiple cracks. Acta Mech, vol.225, pp. 3395–3408.

7. Mohammadpour, M., Theodossiades, S., Rahnejat, H. and Saunders, T., 2014. Non-Newtonian mixed elastohydrodynamics of differential hypoid gears at high loads. Meccanica, no. 49, pp. 1115–1138

8. Hu, Y., Liu, S., Chang, J. and Zhang, J., 2015. An intelligent method for contact fatigue reliability analysis of spur gear under EHL. Journal of Cent. South Univ, no.22, pp. 3389‒3396.

9. Sun, A., Liu, D. and Xu, J., 2014. Numerical simulation of time-dependent EHL line contact problems. China Mechanical Engineering, vol.25, no.4, pp. 476‒479.

10. Wang, J., Qu, S. and Yang, P., 2001. Simplified multigrid technique for the numerical solution to the steady-state and transient EHL line contacts and the arbitrary entrainment EHL point contacts. Tribology International, vol. 34, no.3, pp. 191‒202.

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