Construcción de un roll bar diseñado mediante la simulación estructural de un automóvil Renault Clío 2 2000 para rally basado en la normativa FIA artículo 253

Abstract

This research describes the design and construction process of a roll bar developed through structural simulation of the Renault Clio 2 rally car, based on FIA regulation Article 253. The vehicle in question does not have a roll cage from the factory. Therefore, when used in rally competitions, this must have a protective cage approved by the FEDAK under the FIA standard. With a quantitative methodology and through an applicative approach, an exploratory-descriptive study was conducted using the ASTM A500 Gr. C and A36 comply with Article 253-8 of Annex J of the FIA Standard. For this reason, the material selection was made using the multi-criteria analysis, resulting in the A500 steel being the most optimal for the roll cage. Rollover and impact simulations were performed in both frontal and lateral at a speed of 60 km/h, executed in the HyperMesh Radioss program. The results of the three simulations done showed that the tensile strength does not exceed the value of the material used, where the point of maximum Von Mises stress does not show cracks. During the construction process, appropriate tools were used to assemble the roll bar structurally and to permanently and robustly join the steel parts. MIG welding was applied to ensure a strong bond, and the weld seams were checked using a penetrating dye test. The appearance of the vehicle and the roll bar was improved with an interior and exterior automotive paint finish.