Deep draw induced wrinkling of engineering fabrics
Deep draw induced wrinkling of engineering fabrics
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DOI：
10.1016/j.ijsolstr.2020.12.003
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发表时间：
2020-12
影响因子：
3.6
通讯作者：
P. Harrison;L. Gonzalez Camacho
中科院分区：
文献类型：
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作者：
P. Harrison;L. Gonzalez Camacho
在玻璃和碳纤维织物上进行了深拉深实验，以更好地了解复杂成形实验中皱纹增长的原因，并评估工程织物成形模拟的准确性、稳健性和计算成本。在实验期间，使用两种不同的非接触测量技术(结构光扫描和摄影测量)来数字化变形毛坯的形状。由此产生的数字点云可以对皱纹生长进行详细分析，并表明模拟在预测两种织物非常不同的成形行为方面表现良好。实验和模拟都证明了皱纹的形成对初始条件的敏感性，并且成形过程中皱纹的生长方向影响皱纹的收拢；这一观察结果可能被用来减少实际成形过程中的皱纹收拢。
Deep-draw experiments are performed on both glass and carbon fabric both to better understand the origin of wrinkle growth during complex forming experiments and to assess the accuracy, robustness and computational cost of forming simulations of engineering fabrics. During experiments, the shape of the deformed blanks is digitised using two different non-contact measurement techniques (Structured Light Scanning and Photogrammetry). The resulting digital point clouds permit detailed analysis of wrinkle growth and shows that the simulations perform well in predicting the very different forming behaviours of the two fabrics. The sensitivity of wrinkle formation to initial conditions is demonstrated in both experiments and simulations and the direction of wrinkle growth during the forming process is shown to influence wrinkle draw-in; an observation that could potentially be used to mitigate wrinkle draw-in during actual forming processes.