工艺与制造英文2025
基于质量-弹簧-阻尼器系统的自动纤维铺放工艺及缺陷建模
Modeling of Automated Fiber Placement Process and Defects Based on Mass‐Spring‐Dashpot System
Yan Li, Yuxiao He, Rong Yuan, Jianhong Liang · School of Mechanical Engineering Chengdu University Chengdu China
摘要整理
自动纤维铺放（AFP）工艺中的铺层缺陷会削弱层合板力学性能，其预测和避免至关重要但研究不足。本研究建立了考虑纤维束正交各向异性和粘弹性的质量-弹簧-阻尼器系统模型，并提出了相应的数值算法用于模拟铺放工艺和缺陷生成过程，通过实验验证了模型的准确性。该系统和算法综合考虑了模具表面、铺放路径、工艺参数和纤维束力学特性，能够准确模拟铺放过程中缺陷的产生。在工况1中，第2、3根纤维束的最大桥接高度约12 mm，桥接长度约100 mm；第4根纤维束的最大桥接高度约23 mm，桥接长度约150 mm。在工况2中，观察到褶皱高度约1.6 mm和皱纹高度约1.3 mm。对应的实验测量值为：工况1中第2-3根和第4根纤维束的高度/长度分别为11.5/105 mm和20/154.2 mm，工况2中褶皱/皱纹为1.52/1.45 mm，与仿真结果吻合良好。单根纤维束每铺放10 mm滚筒行程的计算时间约50 s，计算效率较高。该系统和算法可实现快速参数调整，有效降低缺陷，提高铺放质量。
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