Eventos Anais de eventos
COBEM 2017
24th ABCM International Congress of Mechanical Engineering
Dynamic Analysis of Comfort and Health Effects of a Baja SAE Vehicle
Submission Author:
Leonardo Roso Colpo , RS
Co-Authors:
Carlos Eduardo de Souza, Leonardo Roso Colpo
Presenter: Leonardo Roso Colpo
doi://10.26678/ABCM.COBEM2017.COB17-0351
Abstract
The suspension system plays a key role in a vehicle, since its behavior affects significantly the performance of the vehicle, and the comfort of the passengers. The design of a suspension is a challenging task, in view of the multiple control parameters that need to attend the requirements of vertical and lateral dynamics, for comfort and performance. In the present work, the behavior of the vertical dynamics of a Baja SAE is analyzed, in order to verify the comfort level and the limit of exposure time to the ground unevenness provided by the off-road track. The analysis is done through the analytical construction of a full car model of the vehicle suspension, containing 7 degrees of freedom. The system’s mass, stiffness and damping matrices are included in the state space equations. Simulations are performed for three common track conditions: a sine road, cavities and elevations, and for two different speeds. The response obtained allow the evaluation of the suspension behavior and the influence of the main parameters in the accelerations transmitted to the driver. The results are compared with the limits supplied by the ISO standards, regarding the aspects related to the comfort and health of the driver, and so, the damping properties are determined in order to achieve a limit exposure longer than 4 hours.
Keywords
Vehicle Suspension, Vertical Dynamics, Comfort, Health Exposure, BAJA SAE
