Simulation of the Influence of Embedded Inserts on the RTM Filling Behavior Considering Local Fiber Structure
Simulation of the Influence of Embedded Inserts on the RTM Filling Behavior Considering Local Fiber Structure
复制标题
考虑局部纤维结构的嵌入式嵌件对 RTM 填充行为影响的模拟
DOI：
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发表时间：
2017
期刊：
影响因子：
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通讯作者：
F. Henning
中科院分区：
文献类型：
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作者：
Julian Seuffert;L. Kärger;F. Henning
树脂传递模塑（RTM）使得能够内在地制造包含集成金属插入件的纤维增强复合材料部件。在该工艺的预成型阶段，插入件嵌入纤维层中，因此影响随后的模具填充。嵌入物周围的纤维结构受到嵌入物的强烈影响，导致纤维体积分数的局部变化，从而改变局部渗透率。这导致不均匀的流动前沿，甚至可能导致固化部件的干点。为了预测气泡的形成，在考虑局部纤维体积分数的情况下使用两相充模模拟。局部纤维结构的确定使用CT扫描的制造零件与不同的方向插入相对于预制件和填充方向。充模模拟允许不同的填充策略的评估，并显示了强大的影响力的插入局部流动前沿传播。
Resin Transfer Molding (RTM) enables an intrinsic manufacturing of fiber reinforced composite parts containing integrated metallic inserts. The inserts are embedded into the fiber layers in the preforming stage of the process and therefore influence the following mold filling. The fiber structure around the embedded insert is strongly influenced by the insert resulting in high local variations of fiber volume fraction which changes the local permeability. This leads to an inhomogenic flow front and can even result in dry spots of the cured part. To predict the formation of air bubbles, a two-phase mold filling simulation is used under consideration of local fiber volume fraction. Local fiber structure is determined using CT-scans of manufactured parts with different orientations of the insert in relation to the preform and to the filling direction. The mold filling simulations allow the evaluation of different filling strategies and show a strong influence of the insert on the local flow front propagation.
影响因子：
6.3
作者：
Kaerger, Luise;Bernath, Alexander;Henning, Frank
通讯作者：
Henning, Frank