基于数值模拟的注射成型过程中纤维取向研究

Study on Fiber Orientation of Injection Molding Process Based on Numerical Simulation

基于Hele-Shaw流动,采用Dinh-Armstrong流变方程,阐述了短纤维复合材料的纤维取向数值计算过程。运用CAE技术模拟了短纤维填充聚合物熔体在模具型腔内的流动状态,预测了成型过程中熔体充填流动模式、压力场、温度场和速度场的动态变化,研究了短纤维复合材料在注射成型过程中发生的纤维取向行为。这为产品设计、模具设计和优化工艺参数提供重要的参考依据,以获得所需性能的纤维增强塑件。

This paper expounds fiber orientation numerical calculation process of short fiber composites using Dinh-Armstrong rheological equation based on Hele-Shaw flow. The flow state in mold cavity of short fiber composites polymer melt was simulated, melt filling flow pattern, pressure field, temperature field and velocity field of dynamic change were predicted by using CAE technology, fiber orientation of injection molding process was researched. The results provide important reference basis for product design, mold design and optimization of process parameters in order to obtain the required performance of fiber reinforced parts.