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Información tecnológica

versión On-line ISSN 0718-0764


HORTA, Juan C  y  CANALE, Antônio C. The Influence of Parameters of Load in the Directional Stability of Articulated Heavy Vehicle. Inf. tecnol. [online]. 2009, vol.20, n.4, pp. 131-136. ISSN 0718-0764.

This work is about the directional stability of truck-semitrailer vehicle, commonly used in Brazil, as a function of load parameters. For different positions of centre of gravity of semi-trailer, the curves that represent the characteristic movements and the ratio of damping for these movements during curved and straight trajectories are obtained. The influence of load and moment inertia variations for different adopted positions of the centre of gravity of semi-trailer was calculated. The results show significant changes on dynamic response of vehicle with the variations of load parameters. Thus, the operating conditions with less safety margins were determined, so they can be avoided by users. The study allows concluding that there are load conditions that although being accepted by the present legislation, must be avoided.

Palabras clave : articulated vehicles; tractor semi-trailer; vehicle dynamics; directional stability; heavy vehicles.

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