Eventos Anais de eventos
COBEM 2019
25th International Congress of Mechanical Engineering
DIMENSIONAL SYNTHESIS OF THREE-AXLE SEMI-TRAILER STEERING MECHANISMS
Submission Author:
Marina Baldissera de Souza , SC , Brazil
Co-Authors:
Taynah Barbosa Brandão Lima, Gabriel Fontanelle Pereira, Fernando Vinícius Morlin, Marina Baldissera de Souza, Daniel Martins
Presenter: Marina Baldissera de Souza
doi://10.26678/ABCM.COBEM2019.COB2019-1323
Abstract
This paper presents the procedures for the dimensional synthesis of the steering systems of a three-axle semitrailer for trucks, considering that only the central axle is non-steerable. The steering systems are four-bar mechanisms, whose steer angles are calculated using the Freudenstein Equation. However, they do not guarantee that an ideal condition, known as Ackermann condition, is met when the vehicle is turning. Therefore, the dimensional synthesis is done through optimization, aiming to define the dimensions both steering systems should have to the vehicle respects as much as possible the Ackermann condition when the truck is turning. The interior-point algorithm is used to minimize the RMS error between the steer angles obtained by the Ackermann condition and the Freudenstein Equation. Sizing via optimization reduces the RMS error by 90,6% and the resulting dimensions indicate that there is room for improvement.
Keywords
Steering systems, Trucks with multiple axles, Ackerman condition, dimensional synthesis, Optimization
