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TECHNICAL PAPERS

Numerical Simulation of Engagement of a Wet Clutch With Skewed Surface Roughness

[+] Author and Article Information
H. Gao, G. C. Barber

Department of Mechanical Engineering, Oakland University, Rochester, MI 48309

M. Shillor

Department of Mathematics and Statistics, Oakland University, Rochester, MI 48309

J. Tribol 124(2), 305-312 (Jul 03, 2001) (8 pages) doi:10.1115/1.1402178 History: Received February 02, 2001; Revised July 03, 2001
Copyright © 2002 by ASME
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References

Figures

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Comparison of Weibull and Gaussian asperity height distributions on film thickness and relative angular velocity with a negative friction coefficient curve, σ=2.03 μm and Rsk=−0.98, -Weibull distribution; [[ellipsis]]Gaussian distribution
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Comparison of Gaussian and Weibull asperity height distributions on engagement torque with a positive friction coefficient curve, σ=5.08 μm and Rsk=−0.36, -Weibull distribution, [[ellipsis]]Gaussian distribution
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Comparison of Gaussian and Weibull asperity height distributions on film thickness and relative angular velocity with a positive friction coefficient curve, σ=5.08 μm and Rsk=−0.36, -Weibull distribution, [[ellipsis]]Gaussian distribution
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Variation of torque during engagement by considering roughness and skewness for a positive friction coefficient curve, σ=5.08 μm and Rsk=−0.36
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Variation of film thickness and relative angular velocity during engagement by considering roughness and skewness for a positive friction coefficient curve, σ=5.08 μm and Rsk=−0.36
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Schematic of wet clutch model
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Optical photograph of wet friction materials
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Effect of friction coefficient curve on torque by considering skewness for σ=5.08 μm and Rsk=−0.36,−f=0.151+0.0059 log(v);[[ellipsis]]f=0.164−0.0036 log(v)
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Comparison of strain predicted by Gaussian and Weibull distributions with a positive friction coefficient curve for σ=5.08 μm and Rsk=−0.36
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Friction coefficient versus velocity curves of run-in and glazed wet friction materials
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Torque response of run-in wet friction materials with σ=2.67 μm,Rsk=−0.57 and f=4×10−5×v3+4×10−5×v2−0.0155×v+0.2384
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Torque response of glazed wet friction materials with σ=2.03 μm,Rsk=−0.98 and f=−0.0001×v3+0.0049×v2−0.0553×v+0.3396
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Projection of phase space trajectories on to angular velocity-angular displacement plane during engagement

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