A textile architecture-based discrete modeling approach to simulating fabric draping processes
A textile architecture-based discrete modeling approach to simulating fabric draping processes
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DOI：
10.1177/15280837231159678
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发表时间：
2023-01
影响因子：
3.2
通讯作者：
Qingxuan Wei;Dianyun Zhang
中科院分区：
文献类型：
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作者：
Qingxuan Wei;Dianyun Zhang
织物悬垂是指在3D模具上形成织物增强材料的过程，是复合材料制造中的关键阶段，因为它决定了影响后续灌注和固化过程以及所得结构性能的纤维取向。本研究的目的是预测悬垂过程中的织物变形，并通过基于结构的离散有限元分析（FEA）深入了解织物变形。提出了一种新的、高效的离散织物建模方法，该方法通过将虚拟纤维束建模为Leboshenko梁来表示纺织结构，并在交织纤维束的交叉点处通过弹簧和阻尼器连接。进行了相框和悬臂梁弯曲试验以表征输入模型参数。所提出的建模方法的预测能力证明了半球悬垂织物的变形和剪切角的预测。关键的变形模式，包括弯曲和剪切，成功地捕获使用所提出的模型。虚拟纤维丝束模型的发展提供了一种有效的方法来说明悬垂过程中的单个丝束变形，同时在大规模织物悬垂模拟中实现计算效率。离散的织物结构和丝束间的相互作用被认为是在所提出的模型，促进纤维丝束变形模式及其对整体织物变形响应的贡献的深入理解。
Fabric draping, which is referred to as the process of forming of textile reinforcements over a 3D mold, is a critical stage in composites manufacturing since it determines the fiber orientation that affects subsequent infusion and curing processes and the resulting structural performance. The goal of this study is to predict the fabric deformation during the draping process and develop in-depth understanding of fabric deformation through an architecture-based discrete Finite Element Analysis (FEA). A new, efficient discrete fabric modeling approach is proposed by representing textile architecture using virtual fiber tows modeled as Timoshenko beams and connected by the springs and dashpots at the intersections of the interlaced tows. Both picture frame and cantilever beam bending tests were carried out to characterize input model parameters. The predictive capability of the proposed modeling approach is demonstrated by predicting the deformation and shear angles of a fabric subject to hemisphere draping. Key deformation modes, including bending and shearing, are successfully captured using the proposed model. The development of the virtual fiber tow model provides an efficient method to illustrate individual tow deformation during draping while achieving computational efficiency in large-scale fabric draping simulations. Discrete fabric architecture and the inter-tow interactions are considered in the proposed model, promoting a deep understanding of fiber tow deformation modes and their contribution to the overall fabric deformation responses.