Avaliação de uma suspensão duplo A aplicada na estrutura de um veículo VW Fusca visando aumento da vida útil do amortecedores

Abstract

With the increase in fans of off-road and the high price of vehicles with four-wheel drive, it is common to see beginners choose to use cars with rear-wheel drive like the Volkswagen Beetle, however, with the use of the suspension components begin to be severely affected and to fail early due to use on highly uneven terrain. An alternative to the front suspension is to replace it with a double A suspension. Thereby, the video analysis was carried out to determine the dynamic forces acting on the current suspension using the Tracker Video Analysis software, comparing displacements, accelerations and forces acting between the suspension and the vehicle body. Contributing in a future work, the stiffness of four springs of different shapes were theoretically identified and obtaining values close to the results found through laboratory tests. According to the objective of the work, the forces resulting from the new double A suspension designed for the vehicle were analyzed using the procedure indicated by Brown et. al, (2002). The check was repeated varying the inclination of the damper and the influence of this inclination on the forces. The new double A geometry developed for the vehicle did not provide a reduction in the forces acting on the shock absorber, but therewith was possible to observe the effect of amplifying these forces with the increase of inclination of the shock absorber. Due to the ease of adjustments in the geometry of the double A through future work, it will be possible to determine an efficient shock absorber / spring assembly for the use of the vehicle preventing the premature failure of this component. [resumo fornecido pelo autor]