Abstract
The paper presents a numerical simulation of the motion of a car based on a mathematical model that takes into account the lateral and longitudinal forces from the contact stain, forces given by suspension system, aero-dynamical force and weight force. In the paper is also presented the mechanical model for a vehicle upon which it was built a mathematical model. Considering the mechanical model and the mathematical model vehicle dynamics numerical simulations were made using the computing environment Matlab. Numerical simulations presented in this paper are obtained at relatively constant speeds of the car, taking into consideration a sinusoidal variation of the steering angle of the wheel: the variation of steering angle was with amplitude equal to 5° and period equal to 3 s. The results refers to the linear and angular movement and velocity, linear and angular accelerations, deformations of the tires, lateral forces.
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