国产自动铺放干纤维渗透特性的多尺度仿真分析  

Simulation and Analysis of Permeability Characteristics of Domestic Automatic Laying Drying Fiber

作　　者：吕良 圣晓荣 潘利剑 岳广全 刘卫平 LYU Liang;SHENG Xiao-rong;PAN Li-jian;YUE Guang-quan;LIU Wei-ping(College of Textiles,Donghua University,Shanghai 201620,China;Center for Civil Aviation Composites,Donghua University,Shanghai 201620,China;Composite Materials Center,Shanghai Aircraft Manufacturing Company Limited,Shanghai 201324,China)

机构地区：[1]东华大学纺织学院,上海201620 [2]东华大学民用航空复合材料协同创新中心,上海201620 [3]上海飞机制造有限公司复合材料中心,上海201324

出　　处：《合成纤维》2025年第3期60-66,共7页Synthetic Fiber in China

基　　金：国家重点研发计划资助(2022YFB3709204)。

摘　　要：自动铺放的干纤维作为当前国际航天用复合材料常用增强体之一,其渗透特性对复合材料成型及航空大型构件的生产与加工具有重大意义。针对国产自动铺放干纤维开展研究,采用代表元方法表征模拟材料在等温条件下的多尺度渗流过程,并通过控制方程构建微观-宏观多尺度流动控制方程组,在有限元算法中实现了对材料渗流特性的数值模拟。随后对国产自动铺放干纤维进行了中心注胶渗透试验,将试验结果与数值模拟的预测值进行对比,验证该模型在干纤维材料渗流仿真中的准确性。在此基础上,使用宏观控制方程模拟预测值在相同试验条件下的渗流情况,并使用多相流模型方法显示树脂流动前锋,与试验情况进行对比,验证分析方法的有效性。研究结果可以对后期仿真预测和材料改进提供一定的参考。As one of the commonly used reinforcements of international aerospace composite materials,the permeability characteristics of automatic laying dry fiber are of great significance to the production and pro-cessing of composite materials molding and aviation large components.The multi-scale seepage process of simulated materials under isothermal conditions was characterized by the representative element method,and the micro-macro multi-scale flow governing equations were constructed through the governing equa-tions,and the numerical simulation of the seepage characteristics of the materials was realized in the finite element algorithm.Subsequently,the central injection penetration experiment was carried out on the domes-tic automatic laying of dry fibers,and the experimental results were compared with the predicted values of numerical simulation to verify the accuracy of the model in the seepage simulation of dry fiber materials.On this basis,the macroscopic governing equation was used to simulate the seepage of the predicted values un-der the same experimental conditions,and the multiphase flow model method was used to show the resin flow front,and the effectiveness of the analysis method was verified by comparing it with the experimental situation.The research results can provide a certain reference for later simulation prediction and material improvement.

关 键 词：自动铺放 干纤维 渗透率 多尺度方法 数值模拟 

分 类 号：TQ342[化学工程—化纤工业] TB33[一般工业技术—材料科学与工程]