Modeling and Simulation of Non-Isothermal Gas-Assisted Injection Molding For Non-Newtonian Fluids
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Date
2015-09-17
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Abstract
Current gas-assisted injection molding simulations do not accurately predict coating thickness of the frozen layer created by the polymer melt in non-isothermal systems. This project will present a hybrid control-volume finite element/finite-difference method to obtain a numerical simulation of gas-assisted injection molding for non-isothermal systems. In previous studies, a number of simplifying assumptions were made in order to make the simulation model simpler, however, those assumptions contributed to a significant error in predicting the coating thickness. The previous models will be improved upon by taking into account the temperature gradient during the penetration and the effect of forced convection heat transfer. Additionally, this project proposes the set up and performance of experiments at low capillary numbers, so the simulation model will fit non-isothermal systems at both high and low capillary numbers. Therefore, the goal of this project is to develop a simulation model in MATLAB that will more effectively predict the coating thickness in non-isothermal systems at a large range of capillary numbers.
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Engineering and Architecture
Keywords
gas-assisted injection molding, modeling and simulation, non-isothermal, non-newtonian fluids, fractional coverage