Effect of gas inlet angle on the gas-assisted extrusion forming of polymer melt

2017 Global Conference on Polymer and Composite Materials

材料科学;化学

Ren, Z.^1,2 ; Huang, X.Y.^2

Key Laboratory of Optic-Electronic and Communication, Jiangxi Science and Technology Normal University, Nanchang

330038, China^1

School of Mechanical and Electrical Engineering, Nanchang University, Nanchang

330031, China^2

关键词: Dynamic softwares;    Extrusion forming;    Finite element meshes;    First normal stress difference;    Gas inlet;    Geometric models;    Normal stress;    Numerical simulation method;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/213/1/012033/pdf
DOI  :  10.1088/1757-899X/213/1/012033

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

In this paper, the effect of gas inlet angle on the gas-assisted extrusion (GAE) forming of polymer melt was studied by means of numerical simulation method. The geometric models and the corresponding finite element meshes of four different gas inlet angles (0, 30, 60, and 90) were established. The computed fluid dynamic software package Polyflow was used. The shear stress, normal stress, and first normal stress difference of melt at the gas/melt interface were obtained. The results show that the influence of gas inlet angle at 30 on the gas-assisted extrusion forming of melt is lest, which can provide the technique guidance for the optimal designing of the gas-assisted die for the polymer melt.