[1] Nguyen Van Liem, , Zhang Jianrun, et al. Influence of micro asperity contact and radial clearanceon the tribological properties of crankpin bearings [J]. Journal of Southeast University (English Edition), 2021, 37 (3): 264-271. [doi:10.3969/j.issn.1003-7985.2021.03.005]

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Influence of micro asperity contact and radial clearanceon the tribological properties of crankpin bearings()

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Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]

Volumn:

37

Issue:

2021 3

Page:

264-271

Research Field:

Traffic and Transportation Engineering

Publishing date:

2021-09-20

Info

Title:

Influence of micro asperity contact and radial clearanceon the tribological properties of crankpin bearings

Author(s):

Nguyen Van Liem¹;  2;  3;  Zhang Jianrun¹;  Huang Dacheng¹

¹School of Mechanical Engineering, Southeast University, Nanjing 211189, China
²School of Mechanical and Electrical Engineering, Hubei Polytechnic University, Huangshi 435003, China
³Key Laboratory of Intelligent Conveying Technology and Device, Hubei Polytechnic University, Huangshi 435003, China

Keywords:

crankpin bearing;  tribological property;  slider-crank mechanism;  asperity contact

PACS:

U461.3

DOI:

10.3969/j.issn.1003-7985.2021.03.005

Abstract:

A new hybrid numerical method that couples the dynamic slider-crank mechanism(SCM)and crankpin bearing(CB)lubrication models is proposed to analyze the effect of micro asperity contact on the tribological properties of a CB. In the hybrid model, the dynamic equations of the SCM are established based on the Newton method, while the lubrication equations of the CB are established on the basis of the Reynolds equation. Experimental data of the engine are also used in simulation analyses to enhance the reliability of the results. The load-bearing capacity(LBC)and friction force of the CB are selected as objective functions. Results show that the LBC has a negligible effect on the tribological properties of the CB, but the friction force greatly affects the resistance of the bearing under different radial clearances and surface roughness values. In particular, the maximum friction force in the asperity contact region accounts for 40.5% of the maximum total friction force at a radial clearance of 5 μm and 77.7% of the maximum total friction of the CB with a surface roughness of 10 μm.

References:

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Memo

Memo:

Biographies: Nguyen Van Liem(1986—), male, doctor; Zhang Jianrun(corresponding author), male, doctor, professor, zhangjr@seu.edu.cn.
Foundation items: The National Key Research and Development Project(No. 2019YFB2006402), the Open Fund Project of Key Laboratory of Intelligent Conveying Technology and Device, Hubei Polytechnic University.
Citation: Nguyen Van Liem, Zhang Jianrun, Huang Dacheng.Influence of micro asperity contact and radial clearance on the tribological properties of crankpin bearings [J].Journal of Southeast University(English Edition), 2021, 37(3):264-271.DOI:10.3969/j.issn.1003-7985.2021.03.005.

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