Design and Analysis of an Ackermann Steering System for an Off-Road Electric Vehicle
SAE-PP-00402
08/04/2024
- Content
- This paper presents a comprehensive analysis and design of the steering system for an off-road electric vehicle (e-Baja) participating in the SAE International Baja competition. The primary objective is to explore the critical considerations and advantages associated with various steering system options, with a specific focus on the Ackermann steering geometry. The study delves into the design, components, and performance evaluation of the selected steering system, emphasizing its significance in ensuring optimal vehicle manoeuvrability, stability, and overall success in the competition. Through a detailed comparative analysis, the Ackermann steering geometry emerges as the preferred choice, offering improved cornering performance, reduced tire scrub, and predictable handling characteristics. The report presents the mathematical formulations and calculations involved in achieving the desired Ackermann geometry, considering factors such as inner and outer wheel angles, turning radius, and steering ratio. Finite Element Analysis (FEA) simulations are conducted to analyse the stress distribution, deformation, and buckling resistance of the steering system components under various loading conditions. Also, the limited steering characteristics in relation to the suspension system have been analysed to improve its performance through Lotus Shark simulation software. Material selection is crucial, and the suitability of different materials is discussed based on their mechanical properties and performance in the simulations. The fabrication processes, dimensional parameters, and manufacturing techniques employed for each component are meticulously detailed, ensuring adherence to design specifications and quality standards. Validation testing and inspection procedures are outlined to ensure proper functioning and reliability. Overall, this paper serves as a valuable resource for engineering teams participating in off-road vehicle competitions, providing insights into the design, analysis, and fabrication of an efficient and robust steering system tailored to the demanding requirements of off-road racing.
- Citation
- M, A., and V D, T., "Design and Analysis of an Ackermann Steering System for an Off-Road Electric Vehicle," SAE MobilityRxiv™ Preprint, submitted August 4, 2024, https://doi.org/10.47953/SAE-PP-00402.