Effect of geometric scale on the extrudate swell of plastic micro-tubes

5th Annual International Conference on Material Science and Environmental Engineering

材料科学;生态环境科学

Ren, Zhong^1,2 ; Huang, Xingyuan^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: Extrudate swell;    Flow field distribution;    Geometric models;    Geometric scale;    Inner diameters;    Material parameter;    Numerical algorithms;    Wall thickness;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/301/1/012048/pdf
DOI  :  10.1088/1757-899X/301/1/012048

来源: IOP

【 摘 要 】

In this study, the effect of geometric scale on the extrudate swell of plastic micro-tubes was numerically studied by using the finite element method. The four geometric models with same inner diameter but different wall thicknesses were used. Under the same boundary conditions, material parameters, and numerical algorithms, the extrudate swells and flow field distributions of two plastic micro-tubes were obtained. Study results show that the extrudate swell effect of plastic micro-tubes increase with the decreasing of geometric scale. Finally, the mechanisms of the geometric scale on the extrudate swell for the plastic micro-tubes were analyzed.