SMC材成形過程における分岐流動を考慮した材料流動の数値解析(<小特集>高分子系複合材料)

概要

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Recently, in a mass production System, SMC is being applied forvarious products such as automobile parts, Since it has advantageous mechanical properties. However, faults, Such as sink marks, brittle resin rich regions and the reduction of strength at the weldline, are caused by its heterogeneous flow during the flow dueing the process of compression moulding.So it is very important to clear the flow process. In this paper, at first, in order to clarify the aowstate changed by chargepattern, numeri calanalysiswas executed by F E M base doat WO-dimensional steadyaow model, using the concept of branching flow according to the equivale ce of stress gradientattbedivergence point of the advance flow front to two-directions. In order to verify this numerical analysis, the visual observation was carried out. Parameters for the analysis were etradiusand cbargepattefl. There sults of then umerical flow analysis taking into consideration the distribution of flow ratea the divergence were good a greement with the experimental results, and so this an alysis was found useful to various charge patterns in compression moulding.
1991-03-15