Effects of Pore Structure on Hydrodynamic Lubrication of Multi-Layer Oil Bearings

ZHANG Guo-tao; YIN Yan-guo; LI Ji-ning; LIU Zhen-ming; TIAN Ming

doi:10.21656/1000-0887.360296

Volume 37 Issue 8

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Article Navigation > Applied Mathematics and Mechanics > 2016 > 37(8): 873-879

ZHANG Guo-tao, YIN Yan-guo, LI Ji-ning, LIU Zhen-ming, TIAN Ming. Effects of Pore Structure on Hydrodynamic Lubrication of Multi-Layer Oil Bearings[J]. Applied Mathematics and Mechanics, 2016, 37(8): 873-879. doi: 10.21656/1000-0887.360296

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Effects of Pore Structure on Hydrodynamic Lubrication of Multi-Layer Oil Bearings

doi: 10.21656/1000-0887.360296

School of Mechanical and Automotive Engineering, Hefei University of Technology,Hefei 230009, P.R.China

Funds: The National Natural Science Foundation of China（50975072）

Received Date: 2015-10-29
Rev Recd Date: 2015-12-06
Publish Date: 2016-08-15

Abstract

Abstract

The hydrodynamic lubrication model for multi-layer oil bearings was established based on the Darcy’s law. The pores’effects depicted with the Kozeny-Carman equation were considered in the analysis. The effects of the bearing structure and the pore structure on the lubrication properties were simulated and discussed with the finite difference method. Results show that the lubrication properties get worse with the increase of the layer heights and the porosity; a lower-permeability surface will be more beneficial to improve the lubrication performance when the total porosity is fixed. Therefore, in the design of double-layer oil bearings, the surface porosity should be reduced as far as possible as long as the oil content in pores is guaranteed. This work is referential to the analysis of the tribological properties and the structural design of multi-layer oil bearings.
- multi-layer oil bearing,
- hydrodynamic lubrication,
- pore,
- carrying capacity,
- friction coefficient

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References(21)

References

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