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The requirements of the SAE Formula competitions and the limited time available for testing, required students to develop dynamic models of complete vehicles to predict the behavior of their prototypes in the design phase. The difficulty in obtaining reliable tire data to feed the mathematical models of the teams motivated the creation of the TTC Consortium, which carried out measurements of efforts generated by Formula SAE tires on Flat-track equipment, but the laboratory tests did not represent the conditions of friction between the tire and the ground. Thus, a mobile device was developed at the Centro Universitário FEI to evaluate the dynamic behavior of tires under real conditions of application. The present work presented the development of a test method for measuring the efforts generated by FSAE tires using the existing device. The test parameters were defined based on the reference tests carried out in the laboratory, so it was necessary to install a data acquisition system, which enabled the monitoring of the test conditions, such as tire temperature and test speed. In order to obtain reliable and accurate data, the stress measurement system was calibrated, and a more robust data acquisition module was installed. Measurements of lateral force and self-alignment torque generated by the test tire were performed for different slip angle, inclination angle, and normal loads configurations. The experimental data were organized and processed, so that they could be adjusted to the equations of the "Magic Formula". To validate the methodology developed in this study, from the device instrumentation to the experimental data processing, the semiempirical tire model, resulted from the tests, was compared with the model obtained using the TTC reference data. To make this comparison possible, the friction factor of the model based on the Flat-track was corrected through scaling factors. After the comparisons between the two models, it was verified that the developed method was able to generate semi-empirical tire models considering real conditions of application, obtaining compatible results with the data used as reference.

Medição de esforços laterais gerados por pneus de fórmula SAE em um dispositivo móvel