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Technical Briefs

Pure Squeeze Motion in a Magneto-Elastohydrodynamic Lubricated Spherical Conjunction

[+] Author and Article Information
Li-Ming Chu

Department of Mechanical and Automation Engineering, I-Shou University, Kaohsiung County, Taiwan 840, R.O.C

Jaw-Ren Lin

Department of Mechanical Engineering, Nanya Institute of Technology, Jhongli City, Taoyuan County, Taiwan 320, R.O.C

Wang-Long Li1

Institute of Nanotechnology and Microsystems Engineering, National Cheng Kung University, No. 1 University Road, Tainan, Taiwan 701, R.O.Cwlli@mail.ncku.edu.twDepartment of Mechanical Engineering, Kun Shan University, Tainan, Taiwan 710, R.O.Cwlli@mail.ncku.edu.tw

Yuh-Ping Chang

Institute of Nanotechnology and Microsystems Engineering, National Cheng Kung University, No. 1 University Road, Tainan, Taiwan 701, R.O.CDepartment of Mechanical Engineering, Kun Shan University, Tainan, Taiwan 710, R.O.C

1

Corresponding author.

J. Tribol 132(4), 044501 (Sep 13, 2010) (6 pages) doi:10.1115/1.4002182 History: Received August 23, 2009; Revised June 29, 2010; Published September 13, 2010; Online September 13, 2010

The pure squeeze magneto-elastohydrodynamic lubrication (MEHL) motion of circular contacts with an electrically conducting fluid in the presence of a transverse magnetic field is explored under constant load condition. The differences between classical elastohydrodynamic lubrication and MEHL are discussed. The results reveal that the effect of an externally applied magnetic field is equivalent to enhancing effective lubricant viscosity. Therefore, as the Hartmann number increases, the enhancing effect becomes more obvious. Furthermore, the transient pressure profiles, film shapes, normal squeeze velocities, and effective viscosity during the pure squeeze process under various operating conditions are discussed.

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Copyright © 2010 by American Society of Mechanical Engineers
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Figures

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Figure 1

Geometry of MEHL of circular contacts under pure squeeze motion

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Figure 2

Pressure distribution versus time using two different models

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Figure 3

Film thickness distribution versus time using two different models

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Figure 4

Central pressure and film thickness versus time using two different models

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Figure 5

Variation of central normal squeeze velocity with central film thickness

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Figure 6

Variation of effective viscosity ratio with central film thickness

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Figure 7

The maximum central pressure and the time of the maximum central pressure formed versus the Hartmann number

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