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TECHNICAL PAPERS

Application of Lubrication Theory to Fluid Flow in Grinding: Part I—Flow Between Smooth Surfaces

[+] Author and Article Information
P. Hryniewicz, A. Z. Szeri

Department of Mechanical Engineering, University of Delaware, Newark, DE 19716-3140

S. Jahanmir

Ceramics Division, National Institute of Standards and Technology, Gaithersburg, MD 20899-8520

J. Tribol 123(1), 94-100 (Sep 26, 2000) (7 pages) doi:10.1115/1.1331277 History: Received February 23, 2000; Revised September 26, 2000
Copyright © 2001 by ASME
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References

Figures

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Schematic showing the grinding geometry and the coordinate system used in formulation of the problem
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Experimental setup for a simulated grinding operation
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Repeatability verification. Five independent measurements of pressure for oil, Vs=20 m/s,Qnoz=10 l/min, and hg=100 μm.
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Hydrodynamic pressure for oil and hg=100 μm (toil=25.7°C,Qnoz=10 l/min): (a) centerline pressure p as a function of position x for Vs=10 m/s, 20 m/s, and 30 m/s; (b) maximum pressure pmax as a function of the wheel speed Vs
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Hydrodynamic pressure for oil and hg=200 μm (toil=25.7°C,Qnoz=10 l/min): (a) centerline pressure p as a function of position x for Vs=5 m/s, 10 m/s, and 15 m/s; (b) maximum pressure pmax as a function of the wheel speed Vs
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Hydrodynamic pressure for grinding fluid and hg=25 μm: (a) centerline pressure p as a function of position x for Vs=5 m/s, 10 m/s, and 15 m/s; (b) maximum pressure pmax as a function of the wheel speed Vs
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Hydrodynamic pressure for grinding fluid and hg=37 μm: (a) centerline pressure p as a function of position x for Vs=10 m/s, 20 m/s, and 30 m/s; (b) maximum pressure pmax as a function of the wheel speed Vs
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Hydrodynamic pressure for grinding fluid and hg=50 μm: (a) centerline pressure p as a function of position x for Vs=10 m/s, 20 m/s, and 30 m/s; (b) maximum pressure pmax as a function of the wheel speed Vs
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The ratio of measured maximum pressure pmax to the maximum pressure pmaxlam predicted by the classical Reynolds Eq. (2) as a function of the Reynolds number Re. The upper and the lower dashed lines show theoretical predictions of the turbulent models proposed by Ng and Pan and by Hirs, respectively.

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