In this paper, nine different carbon fiber laminates containing clusters are designed using the ant colony ACO algorithm, which have similar equivalent bending stiffnesses and B‐matrices, with the differences being the fiber orientation of the clusters and the position of the clusters in the laminates. The dynamic mechanical characterization of laminates for low velocity impact (LVI) at three different energies was carried out by means of a falling weight impact experiment. The experimental results show that the main form of failure of the laminate is delamination failure at low energy impacts, and shear fracture becomes more and more obvious with the elevation of the impact energy, which was observed in detail by the stereo microscope and electron microscope. The damage area of the laminate and the force and displacement curves after 30 J energy impact were compared by x‐ray scanning to derive the effects of the angle of the ply cluster fibers and the different positions of the ply clusters in the laminate on the impact resistance of the laminate. In conclusion, when designing the laminate, consideration should be given to designing 45° clusters on the impacted side and 90° clusters in the middle layer of the laminate to obtain the best impact resistance.Highlights Designed 9 types of laminates with different laminate structures based on ACO algorithm. Different laminates have similar equivalent bending stiffnesses and the B matrix as close to 0 as possible. LVI tests at three energies were performed on 9 types of laminates. The effects of different orientations of the clusters and the position of the clusters in the laminate on the impact resistance of the laminate were investigated.

中文翻译：

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层片簇位置和方向对多向复合材料层合板低速冲击性能的影响

本文使用蚁群ACO算法设计了九种不同的含有簇的碳纤维层压板，它们具有相似的等效弯曲刚度和B矩阵，不同之处在于簇的纤维取向和层压板中簇的位置。通过落锤冲击实验对层压板在三种不同能量下的低速冲击 (LVI) 进行动态机械表征。实验结果表明，低能量冲击时层合板的主要破坏形式是分层破坏，并且随着冲击能量的升高，剪切断裂变得越来越明显，通过体视显微镜和电子显微镜观察到这一现象。通过X射线扫描比较层合板的损伤面积以及30 J能量冲击后的力和位移曲线，得出层合板中层簇纤维的角度以及层合体中不同位置对冲击的影响层压板的电阻。综上所述，在设计层压板时，应考虑在受冲击面设计45°簇，在层压板中间层设计90°簇，以获得最佳的抗冲击性能。亮点 基于ACO算法设计了9种不同层合结构的层合板。 不同的层压板具有相似的等效弯曲刚度，且 B 矩阵尽可能接近 0。 对 9 种层压板进行了三种能量的 LVI 测试。 研究了簇的不同取向和簇在层压材料中的位置对层压材料的抗冲击性的影响。