HALF-CAR VERTICAL DYNAMICS USING CARSIM SOFTWARE

Dan DUMITRIU, Octavian Daniel MELINTE, Victor VLĂDĂREANU

Abstract


This paper presents half-car vertical dynamics results obtained using CARSIM software. A sinusoidal road profile is considered here for testing purposes. The presented results concern vertical displacements and accelerations, the pitch angle evolution, the damping and spring forces and the tire vertical forces, the suspension jounces/rebounds, the damper compression rate and damping law. These results are presented for the front and rear wheels of the car. Since a simplified half-car 2D model ("bicycle" model) is considered and the road profile is the same for the left and right wheels, there is no difference here between the motion of the left side of the car and its right side. Thus, only the pitch motion of the car is taken into account by the simplified 2D "bicycle" model, neglecting the roll motion and other lateral and longitudinal motions of the car. Further work will study the full car model, including lateral and longitudinal forces as well.

Key words: CARSIM software, car vertical dynamics, jounce, rebound, pitch angle, damper force, spring force, compression rate.

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References


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