Study of Stick-Slip Friction between Plunging Driveline

Paper #:
  • 2015-01-2171

Published:
  • 2015-06-15
DOI:
  • 10.4271/2015-01-2171
Citation:
Spencer, W., Bouzit, D., Pace, J., and Dhillon, S., "Study of Stick-Slip Friction between Plunging Driveline," SAE Technical Paper 2015-01-2171, 2015, doi:10.4271/2015-01-2171.
Pages:
6
Abstract:
Driveline plunge mechanism dynamics has a significant contribution to the driver's perceivable transient NVH error states and to the transmission shift quality. As it accounts for the pitch or roll movements of the front powerplant and rear drive unit, the plunging joints exhibit resisting force in the fore-aft direction under various driveline torque levels. This paper tackles the difficult task of quantifying the coefficient of static friction and the coefficient of dynamic friction in a simple to use metric as it performs in the vehicle.The comparison of the dynamic friction to the static friction allows for the detection of the occurrence of stick-slip in the slip mechanism; which enables for immediate determination of the performance of the design parameters such as spline geometry, mating parts fit and finish, and lubrication. It also provides a simple format to compare a variety of designs available to the automotive design engineer.
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