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根据有效应力准则和达西定律,结合曲线坐标系,构建了曲面复合材料构件固化过程中的树脂流动和纤维压实控制方程;建立了基于AS4/3501-6纤维树脂体系的层合板仿真模型,并将分析结果与实验数据对比,验证了模型的有效性;研究了曲率参数对复合材料构件非等温固化压实的影响规律,比较和分析了曲率参数与厚度和压力参数耦合作用下对树脂流动行为的影响机制。结果表明:构件曲率参数会对树脂分布产生一定影响,曲率越大,树脂分布的非均匀性越大;曲率参数的作用表达受到厚度与压力参数的影响,当厚度与压力较小时,对曲率的影响不明显。
According to the effective stress criterion and Darcy’s law, combined with the curvilinear coordinate system, the resin flow and fiber compaction control equations of the composite material were established. The simulation model of the laminate based on the AS4 / 3501-6 fiber resin system was established, The results of the analysis and experimental data are compared to verify the validity of the model. The influence of curvature parameters on the non-isothermal solidification compaction of composite material components is studied. The influence of the curvature parameters on the flow of resin under the coupling of thickness and pressure parameters is analyzed and compared. Impact mechanism of behavior. The results show that the parameters of the component curvature will affect the resin distribution. The larger the curvature, the greater the non-uniformity of the resin distribution. The expression of the curvature parameter is affected by the thickness and pressure parameters. When the thickness and pressure are small, The effect is not obvious.