A STUDY ON EFFECTS OF STEERING FREQUENCY ON STABILITY OF TRACTOR SEMI TRAILER

Abstract

It is difficult to predict exactly the lateral stability of tractor semi-trailer since the complicated structure of the vehicle with a fifth wheel especially in the case of several motion. Lane change is a common motion process in the high density of vehicles in Vietnam. This paper presents a dynamic model of tractor semi-trailer is developed based on Multi-body System and Newton-Euler Equations. In yaw plane, the bodies of tractor semitrailer are described by 3 degrees of freedom as longitudinal, lateral, yaw. The established model is applied to evaluate the effects of steering frequency of on stability of tractor semi-trailer while single lane change process.