Influence analysis of suspension parameters on vehicle dynamics through an analytical method

Resumo

This study was based on a prototype developed by the Automotive Technology Group - ULBRA, whose
aim is to evaluate the influence of suspension system parameters on the vehicle's directional behavior. An
analytical method was used to calculate the lateral load transfer between the wheels and thus predict the under- or
over-steering behavior. A model developed in the CARSIM® software served as a comparison and validation of
the method. It was possible to define the stiffness of the springs and stabilizer bars to get a vehicle with neutral
behavior and it is concluded that the method is effective for understanding the vehicle roll dynamics in curves and
the influence of each parameter, such as height and center position gravity, roll center, stiffness, and other design
parameters, although it does not consider aspects such as traction or curvature angle variation.