This work aims to improve upon the aluminium impact attenuator currently used by the University of Lisbon Formula Student team through a composite solution. The influence of geometrical variations, particularly the use of curved walls, and the number of objectives considered for the optimization are studied. To perform the optimizations, Abaqus is coupled with the Direct Multisearch (DMS) algorithm, the overall performance of the solutions is evaluated and the influence of the introduction of curved walls on the energy absorption capabilities discussed. Off-axis impacts are studied and the effect of curved walls in that situation analysed. An overview of the best configurations achieved is provided and one final configuration is selected.

这项工作旨在通过复合解决方案改善里斯本大学公式学生小组目前使用的铝质冲击衰减器。研究了几何变化的影响，尤其是弯曲墙的使用，以及为优化考虑的目标数量。为了执行优化，Abaqus与Direct Multisearch（DMS）算法结合使用，评估了解决方案的整体性能，并讨论了弯曲壁的引入对能量吸收能力的影响。研究了离轴冲击，并分析了在这种情况下弯曲墙的影响。提供了最佳配置的概述，并选择了一个最终配置。