Technical Paper
Probability Considerations in Design Case Study- Analysis of Multi Plate Wet Clutch for Judder and Rattling
2007-01-17
2007-26-069
Most of the studies on judder and rattling in power train with multi plate wet clutches are focused on the slip-stick phenomena of the friction materials, lubrication used, thermo-elastic behavior of friction materials, tribology considerations, boundary layer, asperity contact theories and so on. In this paper, a different approach for problem solution is presented. This is based on the concept of mutual matching and differences seen in the behavior of mating components under different assembly boundary conditions, since a very small proportion of mass production exhibits judder and rattling. The clutch and the engine components are assembled in random orientation about the axis of rotation. The probability considerations are extended to explain the basic, root cause of variation on problem occurrence and inconsistency of problem repeatability, even though all the components are within design specifications.