Vehicle and twin-roller chassis dynamometer model considering slip tire interactions

• Published in: Mechanics based design of structures and machines Vol. 51; no. 11; pp. 6166 - 6183
• Main Authors: Lourenço, Maria Augusta de Menezes, Eckert, Jony Javorski, Silva, Fabrício Leonardo, Santiciolli, Fabio Mazzariol, Silva, Ludmila C. A.
• Format: Journal Article
• Language: English
• Published: Taylor & Francis 02-11-2023
• Subjects: chassis dynamometer; experimental validation; vehicle dynamics; Vehicle simulation
• ISSN: 1539-7734; 1539-7742
• DOI: 10.1080/15397734.2022.2038199

xComputational representation of real-world systems plays an important role in vehicle analysis. Aiming to improve mobility systems, this article presents the development of a chassis dynamometer and vehicle model describing the vehicle longitudinal dynamics considering the tire-bench contact. The model simulates the longitudinal vehicle-bench tests where the system is powered by the bench's electric motor and the gearbox in the neutral position, considering tire interaction forces, rolling resistance, and system losses. It was implemented in Matlab/Simulink™ and validated by coast-down experiments, starting at 60 km/h and 100 km/h, where the model result curves presented an appropriated representativity for the experimental data. A total movement resistance analysis resulted in a mean error of 6.71% when compared to experimental data, while the literature slip-independent equations presented mean errors between 31.94% and 77.61%. The developed model is a representative approximation of the vehicle-dynamometer set and can predict longitudinal experiments, helping the vehicle evaluation process, and saving time and resources.