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发布时间：2022-07-25

论文类型：期刊论文

发表时间：2022-06-30

发表刊物：计算力学学报

卷号：27

期号：6

页面范围：1085-1089

ISSN号：1007-4708

摘要：Micro injection molding is suitable for mass production of
   thermo-plastics-based micro- and mini- parts.Analyzing the filling
   process in micro-injection molding is useful and important for the
   optimization of fabrication process and molding master structure.But the
   results from researches indicate that distinct difference exists between
   micro-filling and macro-filling of polymer melt and it will obviously
   induce deviation in the evaluation of micro-filling with macro-scale
   analysis tools.In this paper,based on the open source code of
   OpenFOAM,an analysis module is constructed for the filling flow process
   of micro injection molding,in which the surface characteristic and the
   law for viscosity varying obtained from experiments are included.The
   filling process of the micro-channel,which is essential in micro-fluidic
   devices,is simulated and analyzed.In the result,the effects of surface
   tension and viscosity on the filling rate of micro injection molding are
   demonstrated

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