水辅助注射成型保压过程的数值模拟研究  

Numerical simulation on the packing process of water-assisted injection moulding

作　　者：匡唐清[1] 周建源[1] 熊国良[1] 

机构地区：[1]华东交通大学机电工程学院,江西南昌330013

出　　处：《模具工业》2008年第4期1-5,共5页Die & Mould Industry

基　　金：江西省自然科学基金(2007GQC0864);江西省教育厅科技基金(赣教技字[2007]196号)

摘　　要：基于Hele_Shaw流动模型,采用黏性可压缩非牛顿流体基本方程,建立了水辅助注射成型保压过程的数学模型,并采用有限元/有限差分法对一具有梯形水道的薄壁平板零件保压过程中的浇口处压力变化、水的厚度分布及平均温度分布进行了数值模拟研究,并与传统注射成型进行了对比,验证了水辅助注射成型的优越性。According to the Hele-Shaw fluid model and using the basic flow equations of non-Newtonian, viscous and compressible, a numerical simulation model for the packing stage of water-assisted injection moulding process was built. The finite element/finite difference methods were applied to the numerical simulation of variation in pressure, distribution of thickness and ,average temperature of water during the packing stage in forming a thin wall flat plate with trapezoidal water channel. The water-assisted injection moulding method proved superior over the conventional forming process.

关 键 词：水辅助注射成型 保压过程 数学模型 数值模拟 

分 类 号：TQ320[化学工程—合成树脂塑料工业]