Análise do comportamento dinâmico e vibratório da suspensão de um veículo de pequeno porte "minibaja".

Abstract

This paper aims at presenting a study about the vehicular suspension vibratory dynamic behavior of a "minibaja" the one that has been deigned transit in any land and weather conditions. As for the analyses, two mathematical models are made for the suspension: the first one with a freedom degree with a vehicle in motion on a road profile under a cosine behavior, whereas the second one with three freedom degree with a motionless vehicle. Such systems are simulated under a digital process, which creates an excitation signal, the ones which may be applied to mathematical model. The results found during the former situation points out an increasing in the road wavelength, hence a trailer vertical dislocation decreasing. However, with the velocity increasing the trailer vertical acceleration as well as the vehicle transmitted forces are decreased. Thus, the motionless vehicle figures out three vibration ways: one in the vertical direction, other in the longitudinal direction and another in the transversal one. Here, it could be observed that there is greater vibration intensity in the vertical direction, that is to say, in the up and down directions.