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The Effect of Separator Flatness on the Performance and Durability of Wet Friction Clutches
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Abstract
The automatic transmission clutch represents a complex system involving critical interactions between the separator plates, fluid, operating conditions and friction material. This paper focuses on the effect of separator plate flatness on the performance and durability of two friction materials on an SAE #2 machine.
The data from this study shows that flat separator plates yield higher dynamic coefficients and lower wear when compared to non-flat plates. These effects were obtained for separator plates with peak-to-peak departure from flatness values between approximately .08mm and .25mm.
In addition, other variables such as material elastic modulus, separator plate thickness, and material operating pressure were studied. The use of soft friction materials to improve performance with non-flat reaction plates was quantified.
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Citation
Barker, K., "The Effect of Separator Flatness on the Performance and Durability of Wet Friction Clutches," SAE Technical Paper 930915, 1993, https://doi.org/10.4271/930915.Also In
References
- Zagrodski P. “Analysis of Thermomechanical Phenomena in Multidisc Clutches and Brakes” 140 1990
- Zagrodski P. “Influence of Design and Material Factors on Thermal Stresses in Multiple Disc Wet Clutches and Brakes” SAE 911883 1991
- Burton “Thermal Deformation in Frictionally Heated Contact” 59 1980
- Solt M. “Optimizing Automatic Transmission Clutch Lining Load Distribution Using Finite Element Analysis” SAE 900559 1990
- Takezaki K. Kubota M. “Thermal and Mechanical Damage of Paper Wet Friction Material Induced by Non-Uniform Contact” SAE 922095 1992
- Fish, B. “Wet Friction Material - Some Modes of Failure and Methods of Correction” SAE 760664 1976
- Osanai H. Ikepa K. Kato K. “Relations Between Temperature in Friction Surface and Degradation of Friction Materials During Engaging of Wet Friction Paper” SAE 900553 1990
- Fish B. Lloyd F. “Effect of Fluid Temperature on the Performance of Friction Material” SAE 750809 1975
- Lacroix A. J. SAE 898B 1964
- “SAE No. 2 Clutch Friction Test Machine-Test Procedure - SAE J286” Transmission and Drivetrain Technical Committee 1972, 1983
- “Talyrond 150 Operators Hand Book 289-7” Rank Taylor Hobson Limited
- Wu Y. Moore W. H. “Quality Engineering Product and Process Design Optimization” Ford Motor Company and American Supplier Institute 1985
- Terniko J. “OATS Analysis of Designed Experiments Using Taguchi Philosophy” Davidson Rubber Co. 1985