Numerical simulation of the coinjection molding process
Article Abstract:
A method for analyzing the flow of two different polymer melts injected sequentially into a three-dimensional thin cavity is presented. The method relies on a numerical analysis based on a hybrid finite-element method/finite-difference method/Control-Volume numerical scheme. The fundamental parameters, such as theshear rate and thermal conductivity, are presented in terms of the governing equations for generalized Hele-Shaw flow of inelastic, Newtonian fluids under nonisothermal conditions. This method can be very useful in optimizing the design parameters of co-injection molding processes.
Publication Name: Journal of Engineering Materials and Technology
Subject: Science and technology
ISSN: 0094-4289
Year: 1993
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CAE of mold cooling in injection molding using a three-dimensional numerical simulation
Article Abstract:
A model is developed to simulate the cooling stage of the injection-molding process. The mold heat transfer is defined as a cyclic-steady, three-dimensional conduction. Heat transfer within the melt region is defined as transient, one-dimensional conduction while steady convective heat exchange is found between the cooling channel surfaces and coolant. The model is then integrated into a computer program to be used for the computer-aided engineering analysis of cooling systems.
Publication Name: Journal of Engineering for Industry
Subject: Science and technology
ISSN: 0022-0817
Year: 1992
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Integrated simulation of fluid flow and heat transfer in injection molding for the prediction of shrinkage and warpage
Article Abstract:
Heat transfer andcompressible fluid flow in injection molding are studied to evaluate the shrinkage and warpage of an injection-molded plastic part. A hybrid finite-element/finite-difference/control-volume numerical solution based on a generalized Hele-Shaw flow for a purely viscous fluid of variable density is used in the investigation. The results show very good agreement with preliminary experimental data.
Publication Name: Journal of Engineering Materials and Technology
Subject: Science and technology
ISSN: 0094-4289
Year: 1993
User Contributions:
Comment about this article or add new information about this topic:
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