关键词: FSAE；传动系统；碳纤维复合材料；有限元分析

Abstract: The formula SAE (FSAE) is an automobile design and manufacturing competition in which teams of university students majoring in automotive or mechanical engineering participate. The participating students organize a team to independently design, manufacture and debug a formula car every year. This paper discusses the optimization design of the axle based on the background of formula student automobile competition, especially the design scheme of titanium alloy hollow axle and carbon fiber axle. The advantages and challenges of new materials in the application of axle are analyzed, and the corresponding optimization strategies are put forward according to the competition requirements. The application of hollow axle of titanium alloy reduces the weight of racing car and improves its performance. The application of carbon fiber axle further improves the lightweight level of the car, and also improves the fatigue resistance of the axle, making the car more stable and reliable in fierce competitions. The application of these technologies has promoted the continuous development of racing technology, and has made positive contributions to cultivating talents with innovative spirit and practical ability.

Key words: FSAE; Transmission system; Carbon fiber composite material; Finite element analysis