Modelagem e análise estrutural do eixo traseiro de um kart da categoria F4-Sport

Abstract

The present work proposed the structural modeling and analysis of the rear axle of an F4-Sport category racing kart under static loading, with the objective of validating its structural integrity and proposing mass optimization through the evaluation of alternative material. The methodology employed combined the analytical analysis of bending and torsion stresses with the Finite Element Analysis (FEA), using the Von Mises failure criterion. Initially, the static loads acting on the axle were determined, considering the weight distribution and the transmission torque. The analytical results for the original axle, manufactured from ABNT 1045 steel, indicated a high Safety Factor (SF), validating the robustness of the design. The FEA simulation confirmed the analytical results, establishing the reliability of the numerical model. The mass optimization stage consisted of evaluating a lighter material (aluminum 7075-T6) and analyzing an optimized geometry (hollow axle). The results demonstrated that aluminum 7075-T6, even in its solid configuration, presented an acceptable SF with a significant mass reduction. The geometric optimization for the hollow axle also proved viable, offering an alternative for weight reduction while maintaining structural safety under static loading.