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TECHNICAL PAPERS

A Simplified Approach to Modeling Thermal Effects in Wet Clutch Engagement: Analytical and Experimental Comparison

[+] Author and Article Information
Coby L. Davis, Farshid Sadeghi, Charles M. Krousgrill

School of Mechanical Engineering, Purdue University, West Lafayette, IN 47907

J. Tribol 122(1), 110-118 (Jan 07, 1999) (9 pages) doi:10.1115/1.555370 History: Received September 17, 1998; Revised January 07, 1999
Copyright © 2000 by ASME
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References

Figures

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Single contact surface wet clutch engagement model
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Thermal boundary conditions for separator plate
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Schematic of dynamic wet clutch testing machine
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Close-up separator plate holder and platen
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Statistical analysis of a typical clutch surface
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Thermal effects on film thickness (initial speed 400 rad/s, initial temperature 298 K, maximum load 4500 N, inertia 0.028 kg-m2 )
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Thermal effects on viscous torque (initial speed 400 rad/s, initial temperature 298 K, maximum load 4500 N, inertia 0.028 kg-m2 )
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Thermal effects on asperity contact torque (initial speed 400 rad/s, initial temperature 298 K, maximum load 4500 N, inertia 0.028 kg-m2 )
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Thermal effects on lockup time (initial speed 400 rad/s, initial temperature 298 K, maximum load 4500 N, inertia 0.028 kg-m2 )
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Experimental and analytical torque comparison (initial speed 384 rad/s, initial temperature 311 K, maximum load 7424 N, inertia 0.028 kg-m2 )
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Experimental and analytical torque comparison (initial speed 400 rad/s, initial temperature 311 K, maximum load 4378 N, inertia 0.028 kg-m2 )
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Experimental and analytical torque comparison (initial speed 373 rad/s, initial temperature 394 K, maximum load 4324 N, inertia 0.028 kg-m2 )
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Experimental and analytical torque comparison (initial speed 205 rad/s, initial temperature 394 K, maximum load 4306 N, inertia 0.028 kg-m2 )
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Experimental and analytical torque comparison (initial speed 236 rad/s, initial temperature 311 K, maximum load 7477 N, inertia 0.028 kg-m2 )
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Experimental and analytical torque comparison (initial speed 212 rad/s, initial temperature 394 K, maximum load 7477 N, inertia 0.028 kg-m2 )
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Experimental and analytical torque comparison (initial speed 223 rad/s, initial temperature 311 K, maximum load 4342 N, inertia 0.028 kg-m2 )
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Temperature variation during an engagement (initial speed 400 rad/s, initial temperature 296 K, maximum load 4500 N, inertia 0.028 kg-m2 )
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Experimental and analytical torque comparison (initial speed 416 rad/s, initial temperature 394 K, maximum load 7495 N, inertia 0.028 kg-m2 )
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Experimental and analytical torque comparison (initial speed 460 rad/s, initial temperature 298 K, maximum load 3798 N, inertia 0.028 kg-m2 )

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