Conversion of an Audi A3 to a racing car : structural analysis and propulsion

Abstract

A typical vehicle is not qualified to take part in a race as far as structure and propulsion. So as to go for confirmation to race in a given group, homologated vehicle is required. A few codes and guidelines must be thought about for taking part in a race. That is the reason, wellbeing and improving the exhibition of the vehicle are significant. In this project Audi A3 will be changed over to a racing car as far as structure and power. Therefore, numerical simulations and experimental investigations were performed for higher performance and safety. In other words, finite element analysis was conducted on Patran/Nastran for the roll cage that will be fitted into the car for providing safety. Moreover, thermal stress analysis was performed also on Patran for the original disc brake to guarantee that no crack is happening during the race. One of the most important part in the car in a rally is the suspension system. It is necessary to choose a suitable spring to give solace for the driver and to absorb the shock. That is why, a multibody dynamics and motion analysis was conducted on Adams to choose the stiffness of the coil over. In addition, the engine was homologated by increasing its parameters and adding a turbocharger. The results show that the design of the roll cage with the T45 carbon steel was very safe during an impact and placing a disc brake with bigger and more ventilated surfaces is a must. As a result of the motion analysis for the suspension system, a coil over with a stiffness equal to 80 N/mm was chosen. Finally, all these parts were done also experimentally.