A modeling approach for suspension friction consisting of several sets of friction elements and springs in series

摘要

Automobile suspension consists of various elements that cause friction and which sometimes play a critical role in determining the overall vehicle response and behavior especially with regard to very small amounts of suspension travel represented by vertical "Boulevard-jerk" and "Rumble". The authors attempted to improve the accuracy of the simulation of a vehicle's ride comfort. The first task was to model the friction characteristics, which was then defined by an equation before applying it to a vehicle model. The use of this friction model made it possible to physically express the non-linearity in the vehicle behavior. Additionally, time domain simulations allowed examination of the basic characteristics of the proposed physical model. Thus, it is now possible to design a suspension utilizing the suspension friction as a mean of damping, which inherently has a favorable frequency and amplitude dependency for further improving both ride comfort and handling response.