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为研究金属与复材混杂层板受高速冲击载荷下的破坏机理,通过用户自定义子程序VUMAT、Johnson-Cook本构模型和基于表面内聚行为方法的结合,建立碳纤维增强复合材料和金属组成的层板受高速冲击的数值模型,并应用该方法预测其他类似结构材料的抗高速冲击的表现,分析比较单位面质量或者单位厚度的吸能情况。该方法在材料的能量吸收以及破坏形式方面都与实验结果吻合较好,为该材料的设计提供参考方法和依据。
In order to study the failure mechanism of metal and composite mixed laminates under high-speed impact loading, a carbon fiber-reinforced composite material and metal composition were established through the combination of user-defined subroutines VUMAT, Johnson-Cook constitutive model and surface cohesive behavior method The numerical model of the plate subjected to high-speed impact was used to predict the anti-high-speed impact performance of other similar structural materials. The energy absorption per unit mass or unit thickness was analyzed and compared. The method is in good agreement with the experimental results in energy absorption and destruction of the material, providing a reference method and basis for the design of the material.