| 注塑成型充填过程数值模拟的隐式算法 |
| |
| 引用本文： | 翟明,顾元宪,申长雨. 注塑成型充填过程数值模拟的隐式算法[J]. 化工学报, 2001, 52(9): 771-774 |
| |
| 作者姓名： | 翟明 顾元宪 申长雨 |
| |
| 作者单位： | 大连理工大学工业装备结构分析国家重点实验室; 郑州工业大学橡塑模具国家工程研究中心 ; |
| |
| 基金项目： | 国家重点基础研究专项经费 (G19990 32 80 5 )，高等学校骨干教师资助计划资助 . |
| |
| 摘 要： | 应用有限元 /控制体积方法 ,基于熔体在控制体积内的质量守恒 ,以结点压力和充填分数为未知量 ,建立了熔体在充填阶段流动的控制方程 ,并对方程进行隐式求解 ,完成了对注塑成型充填过程的数值模拟 .算例分析证明算法是正确的
|
| 关 键 词： | 注塑成型 充填分析 隐式算法 塑料 成型工艺 数值模拟 |
| 文章编号： | 0438-1157(2001)09-0771-04 |
| 修稿时间： | 2000-07-17 |
IMPLICIT ALGORITHM FOR NUMERICAL SIMULATION OF INJECTION MOLD FILLING PROCESS |
| |
| ZHAI Ming,GU Yuanxian,SHEN Changyu. IMPLICIT ALGORITHM FOR NUMERICAL SIMULATION OF INJECTION MOLD FILLING PROCESS[J]. Journal of Chemical Industry and Engineering(China), 2001, 52(9): 771-774 |
| |
| Authors: | ZHAI Ming GU Yuanxian SHEN Changyu |
| |
| Abstract: | A physically accurate and computationally effective implicit algorithm for injection mold process simulations is presented. The governing equations involving the pressure field and fill factor which tracks the location of the front surface are developed in terms of mass conservation for each control volume. The transient equations are solved in an iterative manner for both pressure field and fill factor for tracking the progression of the resin front in the mold cavity. The present formulations accurately account for and capture the physical transient nature of the mold filling process while maintaining improved numerical and computational attributes. The selection of time steps is based on accuracy considerations and resolution of flow front locations, which is free from the restrictions that exist in the traditional explicit finite element control volume based formulations. The time increments of the traditional explicit methodology are restricted so that no more than one complete control volume region is updated and filled at each time increment. In certain cases, more than one control volume may be simultaneously filled. The present methodology does not have such a restriction and computes the position of the flow front at each of the selected discrete time intervals. The computed position of the flow front at the end of a certain time interval is independent of the time step size used to reach that time interval.In the end,the methodology is used successfully in two examples. |
| |
| Keywords: | injection molding filling simulation implicit algorithm |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《化工学报》浏览原始摘要信息 |
|
点击此处可从《化工学报》下载免费的PDF全文 |
