A study on gas-assisted injection molding filling simulation based on surface model of a contained circle channel part

被引：12

作者：

Chen, Lei ^{[1
]}

Li, Jianhui ^{[2
]}

Zhou, Huamin ^{[2
]}

Lib, Dequn ^{[2
]}

He, Zhicheng ^{[1
,3
]}

Tang, Qian ^{[1
,3
]}

机构：

[1] Natl Univ Singapore, Dept Mech Engn, Ctr Adv Computat Engn ACES, Singapore 117576, Singapore

[2] Huazhong Univ Sci & Technol, State Key Lab Plast Forming Simulat & Die & Mould, Wuhan 430074, Peoples R China

[3] Hunan Univ, State Key Lab Adv Technol Vehicle Body Design & M, Changsha 410082, Hunan, Peoples R China

来源：

JOURNAL OF MATERIALS PROCESSING TECHNOLOGY | 2008年 / 208卷 / 1-3期

关键词：

GAIM; Surface model; Gas channel; Gas penetration; Numerical simulation;

D O I：

10.1016/j.jmatprotec.2007.12.118

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A practical model of cavity filling in gas-assisted injection molding (GAIM) based on the surface mode has been presented. in this model, according to the flow field at the gas front, gas penetration thickness was educed by solving the theoretical equations governing the behavior of the gas penetration through the matching asymptotic expansion method. in addition, a technology of generating gas channel mesh semi-automatically based on maximum inscribed circle of arbitrary polygon was to proposed. This method combined selecting the path of gas channel manually and calculating the parameters of gas node automatically. Finally, an experiment was employed to verify this proposed model by comparing the results of the experiment with the simulation. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：90 / 98

页数：9

共 13 条

[1] THE MOTION OF LONG BUBBLES IN TUBES [J].

BRETHERTON, FP .

JOURNAL OF FLUID MECHANICS, 1961, 10 (02) :166-188

[2] A UNIFIED SIMULATION OF THE FILLING AND POSTFILLING STAGES IN INJECTION-MOLDING .1. FORMULATION [J].

CHIANG, HH ;

HIEBER, CA ;

WANG, KK .

POLYMER ENGINEERING AND SCIENCE, 1991, 31 (02) :116-124

[3] A 3-D finite element model for gas-assisted injection molding: Simulations and experiments [J].

Haagh, GAAV ;

Peters, GWM ;

Van de Vosse, FN ;

Meijer, HEH .

POLYMER ENGINEERING AND SCIENCE, 2001, 41 (03) :449-465

[4] The penetration of a long bubble through a viscoelastic fluid in a tube [J].

Huzyak, PC ;

Koelling, KW .

JOURNAL OF NON-NEWTONIAN FLUID MECHANICS, 1997, 71 (1-2) :73-88

[5]

JACK A, 2003, GAS ASSIST INJECTION, P58

[6] Primary and secondary gas penetration during gas-assisted injection molding. Part II: Simulation and experiment [J].

Li, CT ;

Shin, JW ;

Isayev, AI ;

Lee, HS .

POLYMER ENGINEERING AND SCIENCE, 2004, 44 (05) :992-1002

[7]

LLINCA F, 2006, INT J NUMER METH ENG, V50, P1445

[8] Gas assisted injection molding of a handle: Three-dimensional simulation and experimental verification [J].

Polynkin, A ;

Pittman, JFT ;

Sienz, J .

POLYMER ENGINEERING AND SCIENCE, 2005, 45 (08) :1049-1058

[9] A study of rib geometry for gas-assisted injection molding [J].

Yang, SY ;

Huang, FZ ;

Liau, WN .

POLYMER ENGINEERING AND SCIENCE, 1996, 36 (23) :2824-2831

[10] DEVELOPMENT OF MOLDABILITY DIAGRAMS FOR GAS-ASSISTED INJECTION-MOLDING [J].

YANG, SY ;

LIOU, SJ .

ADVANCES IN POLYMER TECHNOLOGY, 1995, 14 (03) :197-205

← 1 2 →