工艺与制造英文2023被引 7
热固性树脂在液体复合材料模塑工艺中浸渍过程的数值热-化学-流动耦合分析
A Numerical Thermo-Chemo-Flow Analysis of Thermoset Resin Impregnation in LCM Processes
Hatim Alotaibi, Chamil Abeykoon, Constantinos Soutis, Masoud Jabbari · University of Manchester
摘要整理
本文建立了液体复合材料模塑（LCM）工艺中对流-扩散-反应流的数值模型框架。采用ANSYS Fluent平台，通过自定义函数（UDFs）、用户定义标量（UDS）和用户定义内存（UDM）代码，耦合热固性树脂的固化动力学和流变特性。基于体积流体法（VOF）多相流求解器和有限体积法（FVM），同时求解LCM工艺中的Darcy定律、热传递和化学反应方程。该数值方法能够同步获取流动锋面位置、粘度演变、固化度和反应速率等关键参数，克服了现有文献通常将浸渍阶段和固化阶段分离研究的局限性。模型支持在模具充填和固化阶段进行在线监测、边界条件控制和注射工艺优化设计。通过简单几何结构的对比验证，数值模拟结果与已有研究数据的固化度差异仅为3.4%，验证了模型的有效性。该耦合求解方案为LCM工艺的工程设计和过程控制提供了有力的数值工具。
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