注塑充填过程变厚度截面速度压力场数值模拟  

Numerical simulation for velocity and pressure in filling stage of injection molded parts with uneven thickness

作　　者：刘永志[1] 赵振峰[1] 马兰[1] 申长雨[1] 

机构地区：[1]郑州大学橡塑模具国家工程研究中心,河南郑州450002

出　　处：《化工学报》2009年第7期1818-1822,共5页CIESC Journal

基　　金：国家自然科学基金重大项目(10590352);国家科技支撑计划项目(2006BAF04B11)~~

摘　　要：采用有限元法,对注塑充填过程中"凸"型和"刀"型塑件截面的速度场和压力场进行数值模拟。通过结果分析得出:广义Hele-Shaw流动假设在熔体前沿部分不合理,在塑件截面突变处Hele-Shaw假设也失效,尤其在突变的较宽截面处误差更大。The velocity and pressure in the filling stage of injection-molded parts were simulated with finite element method （FEM）. For given examples, with uneven thickness the simulation results illustrated that the Hele-Shaw approximation did not work for the flow front and the area where the thickness was suddenly changed. The Hele-Shaw approximation tends to give larger error in the thick part if the thickness is changed.

关 键 词：注塑 变截面 数值模拟 

分 类 号：TQ320.66[化学工程—合成树脂塑料工业]