Cast aluminum alloy wheels are widely used in passenger cars for decades due to their high specific strength, high ductility, and high impact resistance. As a safety part, it is subjected to a lot of proofing tests such as fatigue, impact, rigidity, modal analysis etc. Rigidity of a wheel spoke is mainly related to its fatigue performance and has a big impact on handling and driving performance of a car. Therefore, in this study, rigidity of an aluminum alloy wheel was investigated numerically. As a result of good agreement between experimental and numerical result, study continued with the multi-objective optimization of geometrical parameters for the wheel with objectives of maximizing rigidity with minimum mass increase of the wheel. In the study ANSYS Workbench was used in the finite element simulations, and experimental design and statistical analysis was conducted by using Minitab Statistical Software.
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