基于P1/P0四面体宏元的三维注塑充填速度场压力场有限元数值模拟

摘要/Abstract

摘要：

计算效率和解的稳定性是影响三维注塑充填有限元数值模拟的关键因素。针对黏性不可压缩聚合物熔体三维充填过程的速度场和压力场，以提高计算机求解速度为出发点，分析了采用P1/P0四面体单元（速度线性，压力常数）得到的有限元方程的解不收敛的原因，提出一种采用P1/P0四面体宏元离散空间域的求解方案，从而降低了求解的自由度数量，提高了计算速度。通过模拟“圆管中定黏度流体的稳态流动”考察了该求解方案的模拟精度，通过模拟“圆管中定黏度流体的瞬态充填”比较了采用P1/P0四面体宏元和P2/P1四面体单元（二次速度，线性压力）的计算时间。最终将该方案应用到三维注塑充填的数值模拟中。

关键词: 注塑；充填；FONT-SIZE: 10.5pt, mso-bidi-font-family: 宋体, mso-ansi-language: EN-US, mso-fareast-language: ZH-CN, mso-bidi-language: AR-SA, mso-fareast-font-family: 宋体, mso-hansi-font-family: 宋体, mso-bidi-font-size: 11.0pt, mso-ascii-theme-font: minor-latin, mso-fareast-theme-font: minor-fareast" lang=EN-US>P1/P0FONT-SIZE: 10.5pt, mso-ascii-font-family: Calibri, mso-bidi-font-family: 宋体, mso-ansi-language: EN-US, mso-fareast-language: ZH-CN, mso-bidi-language: AR-SA, mso-bidi-font-size: 11.0pt, mso-ascii-theme-font: minor-latin, mso-fareast-theme-font: minor-fareast">四面体宏元；三维数值模拟

Abstract:

Efficiency and stability are the key factors affecting the simulation results of three dimensional （3D）plastic injection molding with the finite element method (FEM).In this paper tetrahedral element based on the Galerkin method was used for the 3D flow simulation of viscous incompressible plastic melt.As the scheme of P1/P0 tetrahedral element (linear velocity and constant pressure）produced unstable results, a new P1/P0 tetrahedral macro-element was used for the discretization of the spatial domain, which was stable and could reduce the CPU time by decreasing the degrees of freedom of the equation.As a numerical test, developed flow with constant viscosity in the cylindrical geometry was used to compare the accuracy of the results given by P1/P0 tetrahedral macro-element and P2/P1 tetrahedral element (quadratic velocity and linear pressure).Besides, the higher efficiency of the P1/P0 tetrahedral macro-element was obviously witnessed by another test of simulating the filling process of the fluid with constant viscosity in cylindrical geometry.In the last part of this paper the scheme of P1/P0 tetrahedral macro-element was used for the simulation of plastic injection molding in filling stage.

Key words: 注塑；充填；FONT-SIZE: 10.5pt, mso-bidi-font-family: 宋体, mso-ansi-language: EN-US, mso-fareast-language: ZH-CN, mso-bidi-language: AR-SA, mso-fareast-font-family: 宋体, mso-hansi-font-family: 宋体, mso-bidi-font-size: 11.0pt, mso-ascii-theme-font: minor-latin, mso-fareast-theme-font: minor-fareast" lang=EN-US>P1/P0FONT-SIZE: 10.5pt, mso-ascii-font-family: Calibri, mso-bidi-font-family: 宋体, mso-ansi-language: EN-US, mso-fareast-language: ZH-CN, mso-bidi-language: AR-SA, mso-bidi-font-size: 11.0pt, mso-ascii-theme-font: minor-latin, mso-fareast-theme-font: minor-fareast">四面体宏元；三维数值模拟

刘永志, 赵振峰, 申长雨. 基于P1/P0四面体宏元的三维注塑充填速度场压力场有限元数值模拟 [J]. 化工学报, 2011, 62(4): 1124-1129.

[1]	张艾萍, 谢立强, 徐志明. 超声空化对换热器协同场的影响 [J]. 化工学报, 2011, 62(S1): 130-133.
[2]	曾庆, 郭印诚, 牛振祺, 林文漪. 填料塔中氨水吸收二氧化碳的传质性能 [J]. 化工学报, 2011, 62(S1): 146-150.
[3]	褚燕彬, 曹柳林, 王晶. 利用组合B样条神经网络实现对间歇反应过程的动态建模 [J]. 化工学报, 2011, 62(S1): 157-162.
[4]	吴海波, 方岩雄, 纪红兵. 助溶剂促进的β-环糊精与肉桂醛的包结性能 [J]. 化工学报, 2011, 62(S1): 168-173.
[5]	何奎, 汪双凤, 黄间珍. 气液两相流在微小T型三通中的相分配特性 [J]. 化工学报, 2011, 62(S1): 92-96.
[6]	崔福庆, 何雅玲, 程泽东, 李东, 陶于兵. 有压腔式吸热器内辐射传播过程的Monte Carlo模拟 [J]. 化工学报, 2011, 62(S1): 60-65.
[7]	马维刚, 王海东, 张兴, 王玮. 多晶金薄膜电子-声子耦合的实验研究 [J]. 化工学报, 2011, 62(S1): 48-53.
[8]	王建立, 朱建军, 宋辰兴, 张兴. 3ω法测量纳米流体热导率 [J]. 化工学报, 2011, 62(S1): 42-47.
[9]	刘绩伟, 吴玉庭, 马重芳. 管肋式空间辐射器设计 [J]. 化工学报, 2011, 62(S1): 103-107.
[10]	李旺, 王情愿, 李瑞龙, 李超, 宇波, 张劲军, 代鹏飞. 大型浮顶油罐温度场数值模拟 [J]. 化工学报, 2011, 62(S1): 108-112.
[11]	胡朝发, 贾力. 脉动热管气液塞振荡运动模型 [J]. 化工学报, 2011, 62(S1): 113-117.
[12]	任楠, 王涛, 吴玉庭, 马重芳. 混合碳酸盐的DSC测量与比热容分析 [J]. 化工学报, 2011, 62(S1): 197-202.
[13]	王勤辉，杨秋辉，吴学成，骆仲泱，岑可法. 多相流中颗粒旋转运动特性的研究进展 [J]. CIESC Journal, 2011, 62(9): 2381-2390.
[14]	刘夺, 杜瑾, 赵广荣, 元英进. 合成生物学在医药及能源领域的应用 [J]. 化工学报, 2011, 62(9): 2391-2397.
[15]	马淳安，储诚普，徐颖华，张虹. 3,6-二氯吡啶甲酸合成方法进展 [J]. CIESC Journal, 2011, 62(9): 2398-2405.

基于P1/P0四面体宏元的三维注塑充填速度场压力场有限元数值模拟

PDF (PC)

可视化

被引次数

摘要/Abstract

引用本文

使用本文

参考文献

相关文章 15

编辑推荐

Metrics

本文评价