Simulation of air bubble’s creation, compression, and transport phenomena in resin transfer moulding
Simulation of air bubble’s creation, compression, and transport phenomena in resin transfer moulding
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模拟树脂传递模塑中气泡的产生、压缩和传输现象
DOI：
10.1177/0021998317697481
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发表时间：
2017
影响因子：
2.9
通讯作者：
Yasir Nawab
中科院分区：
文献类型：
--
作者：
Bouchra Aaboud;A. Saouab;Yasir Nawab
气泡的存在会降低复合材料零件的机械性能，从而影响生产的复合材料零件的质量，还可能会降低其表面光洁度。气泡捕获的模拟需要考虑三个现象：气泡的产生、压缩和传输。对后一种现象的研究很少。本文所建立的模型适用于单向加固。通过控制体积有限元方法，将其集成到树脂传递成型过程的模拟程序中。该模型考虑了纤维介质中的双重尺度气孔，并模拟了上述三种现象，突出了迁移现象和微气泡与宏观气泡的共存。结果，估计了在注射结束时产生、压缩和输送的气泡的空间分布及其宏观和微观残留量。
The presence of air bubbles impacts the quality of the produced composite part, by reducing its mechanical properties, and also it might degrade its surface finish. The modelling of air bubbles entrapment requires the consideration of three phenomena: air bubble’s creation, compression and transport. Very few studies have been conducted on this latter phenomenon. The model developed in this work is proposed for a unidirectional reinforcement. It is integrated into a simulation code of resin transfer moulding process, via the control volume finite element method. That model takes into account the dual scale pores in fibrous media, and simulates the three said phenomena highlighting the migration phenomenon and the coexistence of micro and macro air bubbles. As a result, the spatial distribution of created, compressed and transported air bubbles as well as its macro and micro remaining quantities, in the end of the injection are estimated.