A unified technique for evaluating the molding process and the mechanical properties in short-fiber-reinforced plastics

本研究开发了一种使用颗粒法的短纤维增强塑料的模具填充模拟，以及一种基于分析的纤维取向来预测模塑复合材料中的力学性能分布的方法。将纤维视为刚体或弹性体，纤维分析与流体分析相互作用较弱。通过对注塑成型和压缩成型过程中纤维流动和变形的实验研究，验证了该方法的有效性。此外，预测的压缩成型复合材料的弹性模量分布与实验结果一致。

This study has developed a mold-filling simulation for short-fiberreinforced plastics using a particle method, as well as an approach to predict distribution of mechanical properties in molded composites based on the analyzed fiber orientation. Fibers were considered as rigid bodies or elastic solids, and the analysis for fibers interactedweakly with the fluid analysis. Fiber flow and fiber deformation in injection molding and compression molding were compared between the present approach and observations, andits usefulness was demonstrated. Furthermore, predicted distribution of elastic moduli in compression-molded composites agreed with an experiment result.