Wet clutches that handle the gearshifts in automatic transmission undergo severe thermal stresses due to the occurrence of large temperature gradients during engagement. To accurately design wet clutches, better models to simulate the engagement process are needed. This work presents a finite element model for simulating wet clutch engagements. The total friction coefficient was used to describe the different lubrication regimes that a wet clutch engagement undergoes. The model also includes provision for drive torque that realistically simulates the engine torque of a car. The results of the simulations are successfully verified by comparison with laboratory experiments on a testrig specially designed to accommodate the drive torque, covering a wide range of typical engagements. Excellent agreement between experiment and simulations is reported in terms of both the dynamics of the engagement and the thermal characteristics. The results are indicative of the utility of the model as a useful engineering tool.
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April 2001
Technical Papers
Thermal and Dynamic Characterization of Wet Clutch Engagement With Provision for Drive Torque
M. Mansouri,
M. Mansouri
Department of Mechanical Engineering, Louisiana State University, Baton Rouge, LA 70803
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M. Holgerson,
M. Holgerson
Division of Machine Elements, Lulea University of Technology, SE-971 87 Lulea, Sweden
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M. M. Khonsari,
M. M. Khonsari
Department of Mechanical Engineering, Louisiana State University, Baton Rouge, LA 70803
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W. Aung
W. Aung
College of Engineering, Southern Illinois University, Carbondale, IL 62901
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M. Mansouri
Department of Mechanical Engineering, Louisiana State University, Baton Rouge, LA 70803
M. Holgerson
Division of Machine Elements, Lulea University of Technology, SE-971 87 Lulea, Sweden
M. M. Khonsari
Department of Mechanical Engineering, Louisiana State University, Baton Rouge, LA 70803
W. Aung
College of Engineering, Southern Illinois University, Carbondale, IL 62901
Contributed by the Tribology Division for publication in the ASME JOURNAL OF TRIBOLOGY. Manuscript received by the Tribology Division January 11, 2000; revised manuscript received June 16, 2000. Associate Editor: B. O. Jacobson.
J. Tribol. Apr 2001, 123(2): 313-323 (11 pages)
Published Online: June 16, 2000
Article history
Received:
January 11, 2000
Revised:
June 16, 2000
Citation
Mansouri, M., Holgerson, M., Khonsari, M. M., and Aung, W. (June 16, 2000). "Thermal and Dynamic Characterization of Wet Clutch Engagement With Provision for Drive Torque ." ASME. J. Tribol. April 2001; 123(2): 313–323. https://doi.org/10.1115/1.1329856
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