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Technical Briefs

The Elastohydrodynamic Traction of a Grease LGLT2

[+] Author and Article Information
Yanshuang Wang

e-mail: hkd_wang_yan_shuang@126.com

Yan Li

Henan University of Science and Technology,
Luoyang 471003, China

1Corresponding author.

Contributed by the Tribology Division of ASME for publication in the Journal of Tribology. Manuscript received September 24, 2012; final manuscript received March 20, 2013; published online May 2, 2013. Assoc. Editor: Dong Zhu.

J. Tribol 135(3), 034501 (May 02, 2013) (4 pages) Paper No: TRIB-12-1158; doi: 10.1115/1.4024102 History: Received September 24, 2012; Revised March 20, 2013

The elastohydrodynamic (EHD) traction coefficients of a lubricating grease LGLT2 were tested at various loads and rolling speeds on a self-made test rig. Traction coefficient versus slide-to-roll ratio curves were generated. Formulae which relate traction coefficient with normal load and rolling speed are put forth. The coefficients of the formulae may be computed by regression analysis of the experimental data. The results show that the calculated traction coefficients agree well with the experimental observation. The critical normal load exists when the traction coefficients change with the normal loads.

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Figures

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Fig. 6

Variation in traction coefficient with normal load

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Fig. 5

Variation in traction coefficient with normal load at rolling speed U = 25 m/s

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Fig. 4

Variation in traction coefficient with rolling speed at normal load W = 135 N

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Fig. 3

Rigid traction measurement system

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Fig. 2

Device of gas-pressure grease feed

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Fig. 1

Construction of the test rig [1]

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