玄武岩纤维/铝合金层合板低速冲击性能及应用研究

制备一种玄武岩纤维/铝合金层合板复合结构,通过试验和仿真,探讨该复合结构的拉伸、压缩、剪切、弯曲和抗冲击特性。采用连续壳单元模拟纤维层,建立低速冲击仿真模型,从能量吸收、接触力和层合板损伤程度3个方面,研究铺层结构和冲击载荷角度对纤维金属层合板抗冲击性能的影响。最后,将纤维金属层合板应用于发动机罩外板,进行发动机罩静态刚度和行人头部碰撞仿真分析。结果表明,与原发动机罩相比,纤维金属层合板发动机罩的弯曲刚度和扭转刚度均有不同程度提高,行人头部保护性能得到改善。

Study on Low-speed Impact Performance and Applicationof Basalt Fiber/Aluminum Alloy Laminates

A composite structure composed of basalt fiber and aluminum alloy laminates are manufactured and its tensile,compression,shear,bending and anti-impact characteristics are explored by test and simulation.Then,a low-speed impact simulation model is set up with fiber layer simulated by continuous shell element,and the effects of ply laying structure and the angle of impact load on the anti-impact performance of fiber-metal laminates are studied in terms of energy absorption,contact force and laminate damage degree.Finally,fiber-metal laminates are applied to the external panel of engine hood and a simulation on the static stiffness and pedestrian head collision is also performed.The results show that compared with original engine hood,the bending and torsional stiffness of engine hood using fiber-metal laminates are enhanced to different degrees with pedestrian head protection performance improved.