碳纤维铝蜂窝复合材料汽车保险杠横梁轻量化设计

Lightweight design of automobile bumper beam made of carbon fiber aluminum honeycomb composite

采用碳纤维铝蜂窝复合材料替代原铝合金材料,对汽车的保险杠横梁进行轻量化设计,并利用Abaqus CAE软件对比分析铝合金(6082-T6)、T300和T700碳纤维以及T300碳纤维铝蜂窝复合材料保险杠横梁的力学性能。利用碳纤维铝蜂窝复合材料结构方面的可设计性,探索碳纤维铝蜂窝复合材料面板的厚度、铝蜂窝的边长尺寸以及铝蜂窝的壁厚等结构参数对碳纤维铝蜂窝复合材料保险杠横梁性能的影响规律,通过调节结构参数获得最优性能的碳纤维铝蜂窝复合材料汽车保险杠横梁。结果显示,设计的H4碳纤维铝蜂窝复合材料的保险杠横梁的抗冲击性能优于传统铝合金,并且能减重50%左右,满足使用要求且轻量化效果显著。

The carbon fiber aluminum honeycomb composite was used to replace the original aluminum alloy material for lightweight design of automobile bumper beam.Then the Abaqus CAE software was used to test the mechanical properties of bumper beams made of aluminum alloy(6082-T6)、T300 carbon fiber,T700 carbon fiber and T300 carbon fiber aluminum honeycomb composite.The effects of structural parameters such as the thickness of carbon fiber aluminum honeycomb composite panel,the side length of aluminum honeycomb and the wall thickness of aluminum honeycomb on the performance of carbon fiber aluminum honeycomb composite bumper beam were explored.The carbon fiber aluminum honeycomb composite beam with optimal performance was obtained by optimizing structural parameters.It is concluded that the impact resistance of bumper beam which is made of H 4 carbon fiber aluminum honeycomb composite is better than that of traditional aluminum alloy.Meanwhile,it shows that the carbon fiber aluminum honeycomb composite is about 50%less than aluminum alloy material in mass for fabricating bumper beam of the same size.In summary,the carbon fiber aluminum honeycomb composite bumper beam not only meets the use requirements,but also has remarkable lightweight effect.