工艺与制造英文2021
树脂传递模塑工艺中双尺度多孔介质有限应变多相流模型
Finite Strain Modelling for Multiphase Flow in Dual Scale Porous Media During Resin Infusion Process
Ruoyu Huang
摘要整理
树脂传递模塑（RTM）是一种压力梯度驱动的复合材料制造工艺，液态树脂在压力作用下流动并填充纤维预制体的孔隙空间，随后进行热处理使树脂固化。对于飞机和风力叶片等大型构件，设计既满足制造要求的传递系统和工艺参数是重大挑战。本研究针对流动前沿控制和气泡夹入等关键问题，建立了树脂与空气在复合材料纤维预制体（双尺度多孔介质）中的多相流模型框架。研究采用有限应变公式描述传递过程中的流固耦合相互作用。通过平均化方法和第一性原理方法，本研究架起了微观观测与宏观模型之间的桥梁，为高保真有限元模型提供了新的理论视角。该模型可准确预测树脂流动前沿位置、气泡分布规律，为大型复合材料构件的工艺设计和质量控制提供理论支撑。
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