Análise estrutural - Baja Pampa

Abstract

The Baja SAE Brazil program is designed for engineering students who train teams with the purpose of developing an off-road vehicle, called baja, for participation in the Baja SAE Brazil Competition. The main objective of this work is to study the chassis of the Baja Pampa team, which is made up of students from the Mechanical Engineering course at Unipampa. This study initially carried out two experimental tests with the chassis: the first go to obtain the torsional stiffness by means of the application of a front torquing moment and the second test had as objective to know the deformation of specific points of the structure through its instrumentation with resistive extensometers due the application of a static charge. The torsional strength of the chassis was 940.00 Nm/° and was within the range acceptable for this type of vehicle. After the experimental tests, the numerical model of the structure was validated by means of simulations with the same contour conditions with which the experimental tests were done. The simulations showed a torsional stiffness of 7,31% higher than that obtained experimentally and the strain value 7,45% lower than that measured in the experimental static load test. Finally, the validation of the finite element model allowed a dynamic study of the chassis in computational form showing its six first modes of vibration. With this, the validation of the model in finite elements has made the team have a numerical model of the chassis and can use for other types of analysis.