依据荣威750轿车后悬架上摆臂的载荷谱以及结构特点,将钢制上摆臂改为铝合金材料制作,并进行结构的优化设计,以达到轻量化的目的。利用ANSYS结构分析软件对轻量化后的上摆臂进行强度、模态以及疲劳寿命的分析,确保轻量化的可行性。结果表明,新的铝合金上摆臂的各项性能指标满足实际工况使用要求。 Based on the load spectrum of the swing arm on the rear suspension of the Roewe 750 sedan and its structural features, the upper arm of the steel is changed to an aluminum alloy material, and the structure is optimized to achieve the purpose of light weight. Using ANSYS structural analysis software to analyze the strength, modalities and fatigue life of the upper arm after light weighting, to ensure the feasibility of lightweight. The results show that the new aluminum alloy arm of the performance indicators to meet the actual conditions of use requirements.