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粒子方法的短纤维增强塑料充模模拟，以及一种基于分析的纤维取向来预测模压复合材料力学性能分布的方法。纤维被认为是刚体或弹性固体，纤维的分析与流体分析的相互作用很弱。对注射成型和压缩成型中的纤维流动和纤维变形进行了比较，证明了该方法的有效性。此外，预测的压缩模塑复合材料的弹性模数分布与实验结果相吻合。

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.