Investigation of influence of the outlet channel length of extruder die hydrodynamics of extrusion process

International Scientific and Technical Conference "Innovative Mechanical Engineering Technologies, Equipment and Materials-2014"

机械制造;材料科学

Sharafutdinov, R.F.^1 ; Galimov, E.R.^1 ; Snigerev, B.A.^2

Kazan National Research Technical University Named after A N Tupolev, Russia^1

Institute of Mechanics and Engineering, Kazan Science Center, Russian Academy of Sciences, Russia^2

关键词: Conservation of mass;    Distribution patterns;    Extrusion process;    Fluid velocities;    Numerical algorithms;    Rheological modeling;    Swelling degree;    Vis-coelastic fluids;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/86/1/012031/pdf
DOI  :  10.1088/1757-899X/86/1/012031

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

Influence of the outlet channel length of an extruder on a steady creeping outflow of viscoelastic fluid is investigated. Fluid motion is described by equations of conservation of mass and momentum supplemented by Giesekus's determinative rheological constitutive equation of the medium. On the basis of finite element method a numerical algorithm for solving the problem was developed. Distribution pattern of fluid velocity in an outflowing jet, pressure and stresses is analyzed; results of dependency of swelling degree of polymer fluid on die geometry and parameters of a rheological model are investigated.