Dynamic Responses of a Drivetrain System with Dry Friction Clutch under Time-Varying Normal Load

摘要

This study aims to acquire a better understanding of the dynamic response of a dry frictionrn(slip torque converter) clutch that is widely found in automatic transmissions. A drivetrainrnsystem is simplified as a two-degree of freedom torsional system for the sake of illustration.rnFriction clutch is treated as a power transmission path that is subjected to time-varyingrnnormal load. Under a sinusoidal torque excitation, three types of friction interface motions,rnnamely pure stick, pure slip and stick-slip motions are determined via analytical orrncomputational approaches. Transient time histories are of interest. It is observed that arnwell-tuned normal load could possibly attenuate the stick-slip transients even in thernpresence of the negative slope in friction-velocity characteristics. Plausible physicalrnexplanations are provided.