Efficient Simulation of Static and Dynamic Friction for Automotive Applications

In this paper, a technique for modeling frictional phenomena among several bodies that move relatively is proposed with the purpose of optimizing the dynamic simulation of a complex system such as the driveline of a vehicle based on a dual clutch transmission. The proposed method considers together the inertial and frictional properties of the different subsystems, but decouples a main dynamics, that describes their average motion and does not depend on friction, from a proper number of relative dynamics. In this way, for each of these dynamics a standard static friction models can be used, leading to a very efficient numerical simulation. In this sense, the method adopted can be considered an enhancement of Karnopp model.