Definition of a trajectory of the vehicle movement, taking into account interation of its wheel and road surface

Abstract

In this paper the authors focus on the simulation of the vehicle on a certain road and propose their specific solution to this problem. Mathematical model of the system “vehicle − road” is presented. The vehicle is simulated by concentrated masses interconnected by elastic and dissipative links. The presented model of the vehicle evaluates the movement of the vehicle body in space; movement and turning of front and rear suspensions with respect to the body; interaction of the wheel with the road pavement surface; blocking of the wheel; changing cohesive forces which influence the vehicle. The investigated road pavement surface is simulated by triangular finite elements, a certain height of road pavement surface roughness and cohesion coefficients of road pavement surface and the vehicle wheel in the longitudinal and transverse directions of the wheel are selected in each finite element nodal point. Presented results, illustrating the vehicle movement trajectories when braking at various initial conditions and a certain pavement surface of the road section under investigation; the vehicle driving on the speed reduction bump (“sleeping policeman”).