纤维金属层合板低速冲击性能研究

STUDY ON LOW SPEED IMPACT PERFORMANCE OF FIBER-METAL LAMINATES

选用AL5052和AL6061两种铝合金薄板与玄武岩纤维布对称交替层铺,制备几种不同结构形式的纤维金属层合板,试验对比分析层合板结构的弯曲和低速冲击性能;建立层合板低速冲击仿真模型,研究纤维铺层方式对层合板抗低速冲击性能的影响;对铝合金板厚度进行多目标优化,获得各层铝合金板的最佳厚度值;将最优层合板结构应用于某轿车车门外板进行柱碰仿真分析。结果表明:与原车门相比,纤维金属层合板车门的吸能特性和减重效果均有不同程度的提升。

Two kinds of aluminum alloy sheets,AL5052 and AL6061,and basalt fiber cloth are selected to be laid as symmetrical and alternate layers to manufacture fiber-metal laminates with different structures.The bending and low-speed impact performance of the laminate structure are tested and compared;the laminate low-speed impact simulation model is established to study the influence of laminates fiber layup methods on the low-speed impact resistance;the thickness of aluminum alloy plates were optimized with multiple objectives to obtain the best thickness values of each layer of aluminum alloy plates;the optimal laminate structure is applied to the external panel of a car door for column collision simulation analysis.The results show:compared with the original door,the energy absorption characteristics and weight reduction effect of the fiber metal laminate door have been improved obviously.