Research Papers: Elastohydrodynamic Lubrication

A New Method for Eyring Shear-Thinning Models in Elliptical Contacts Thermal Elastohydrodynamic Lubrication

[+] Author and Article Information
Xiaoling Liu

School of Mechanical Engineering,
Qingdao University of Technology,
777 Jialingjiang Road, Huangdao District,
Qingdao 266520, China
e-mail: liu_xiaoling06@126.com

Mingming Ma

School of Mechanical Engineering,
Qingdao University of Technology,
777 Jialingjiang Road, Huangdao District,
Qingdao 266520, China
e-mail: mamingming1019@163.com

Peiran Yang

School of Mechanical Engineering,
Qingdao University of Technology,
777 Jialingjiang Road, Huangdao District,
Qingdao 266520, China
e-mail: pr_yang@163.com

Feng Guo

School of Mechanical Engineering,
Qingdao University of Technology,
777 Jialingjiang Road, Huangdao District,
Qingdao 266520, China
e-mail: mefguo@163.com

1Corresponding author.

Contributed by the Tribology Division of ASME for publication in the JOURNAL OF TRIBOLOGY. Manuscript received January 16, 2018; final manuscript received February 14, 2018; published online April 26, 2018. Assoc. Editor: Liming Chang.

J. Tribol 140(5), 051503 (Apr 26, 2018) (6 pages) Paper No: TRIB-18-1023; doi: 10.1115/1.4039552 History: Received January 16, 2018; Revised February 14, 2018

A new method for solving the shear stress and the effective viscosity of Eyring shear-thinning fluid in thermal elastohydrodynamic lubrication (EHL) was proposed and applied to two models. Model 1 is the thermal EHL model with one-direction velocity, and model 2 is the spinning thermal EHL model in which the velocity varies with coordinates. Comparisons between the new and the existing method were carried out. Results show that only replacing the shear strain rate of model 1 with that of model 2, the shear stress and the effective viscosity of model 2 for Eyring shear-thinning fluid can be obtained. For model 1, results obtained with the two methods are the same. The new method can be qualified and applied into model 2. It is proved that the new method has higher efficiency for shear-thinning fluid than the existing method. Therefore, the new method is more efficient and can be used for spinning Eyring shear-thinning thermal EHL.

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Grahic Jump Location
Fig. 1

Analysis of velocity for model 2

Grahic Jump Location
Fig. 2

The flowchart for the new method

Grahic Jump Location
Fig. 3

Comparison of film thickness and temperature with two methods for model 1 for u1 = 1.125 m/s, pH = 0.8 GPa, ζ = 0.25, and ke = 3

Grahic Jump Location
Fig. 4

Profiles of film thickness and temperature for model 2 with the new method for ζ = 0.6, pH = 1.2 GPa, ke = 6, ω = 120π rad/s, and r = 0.005 m



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