Experimental and numerical study of the influence of integrated load transmission elements on filling behavior in resin transfer molding

Experimental and numerical study of the influence of integrated load transmission elements on filling behavior in resin transfer molding
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集成负载传输元件对树脂传递模塑填充行为影响的实验和数值研究

DOI:
10.1016/j.compstruct.2018.05.021
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发表时间:
2018
影响因子:
6.3
通讯作者:
Henning F
Henning F
中科院分区:
工程技术1区
文献类型:
--
作者:
Magagnato D;Seuffert J;Bernath A;Kärger L;Henning F

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采用树脂传递模塑(RTM)工艺制造零件可实现负载传递元件(例如镶件)的在线集成。在预成型过程中,镶件安装在干织物中,因此影响RTM工艺的后续充模阶段,因为镶件附近的纤维结构可能会有很大的变化。具体地说,插入件旁边的高纤维体积分数增加了在嵌入插入件附近形成干斑的风险。本文从实验和数值两方面分析了镶件对RTM充型过程的影响。分析了两种不同的刀片几何形状:标准刀片和优化刀片。为了进行详细的分析,模拟中考虑了镶件周围局部纤维结构的影响。这是通过分析被加工零件的CT图像并将纤维结构信息传输到仿真模型来实现的。
Manufacturing parts with the resin transfer molding (RTM) process enables the inline integration of load transmission elements (e.g. inserts). During the preforming process, the inserts are installed in the dry fabric and, consequently, influence the following mold filling stage of the RTM process because fiber structure in the vicinity of the insert may considerably vary. Particularly, a high fiber volume fraction next to the insert raises the risk of a formation of dry spots close to the embedded insert. In this study, the influence of an insert on the RTM mold filling is analyzed experimentally and numerically. Two different insert geometries are analyzed: a standard insert and an optimized insert. For a detailed analysis, the influence of the local fiber structure around the insert is included in the simulation. This is realized by analyzing CT images of manufactured parts and transferring the fiber structure information to the simulation model.
织物结构和模具曲率对 RTM 工艺中预成型件渗透性和模具填充的影响。
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