Rediseño y construcción del chasis y la carrocería de un prototipo para la competencia Eco Shell Marathon.

Abstract

The objective of the present study was to design the chassis and the bodywork of a prototype vehicle through the CAE analysis for the Shell Eco-Marathon competition, which must be light and at the same time resistant and allow greater speed, improving its performance in the competition. Referring to the design, the current competition regulations that specify the minimum and maximum measures for the vehicle were taken into account, a computer-aided model software was also used for the elaboration of the plans and the prototype model, then the material using a decision matrix establishing aluminum alloy round tubular profile for the chassis and fiberglass for the bodywork, with the help of CAE tools a simulation was made entering as input data the material with its characteristics and a speed of 60ms. Performed the static and dynamic analysis, it was determined that the prototype has an elongation of 0.0043 and a safety factor of 2.02 indicating a good structure and safety resistance for the pilot; Besides, its shape has a coefficient of friction of 0.34 which reduces aerodynamic drag, the pressure is low of 211.11 Pa Because the frontal area is very small and causes the air flow to gradually deviate. It is concluded that the materials used allow the prototype to be light and resistant because the round profile has a lower weight per inch than a square one and better supports lateral loads; The body material offers lighter weight with a total weight of 40 kg and greater speed due to the raised geometry. The continuity of the project that complements this purpose is recommended, such as the electric, brake and steering system and the engine powering.