Análise numérica e desenvolvimento de um chassi Baja SAE

Abstract

This term paper aimed to develop a numerical model to assist in the construction of the chassis of a BAJA SAE vehicle, designed for national and international student competitions. The research was carried out through the use of the finite element method (FEM) in the ANSYS APDL software, in order to analyze the bending and torsional stiffness of the structure, which are fundamental properties for the chassis' performance. The way the project was developed involved the creation of a detailed three-dimensional model of the chassis in CAD, respecting the specifications of the Baja SAE Brasil Administrative and Technical Regulation (RATBSB). Computational simulations were carried out to evaluate stresses, strains and stiffness of the structure. The results indicated that the chassis meet the safety and performance standards required by the competition, being within the recommended torsional stiffness range (750 to 1500 Nm/°), with stresses well below the yield limit of the material used (SAE steel 1020). This study directly contributes to the technical advancement of the Baja Pampa team by providing a solid foundation for future experimental analysis and development. Keywords: Chassis, Finite Element Method, Bending Stiffness, Torsional Stiffness, BAJA.