Numerical Analysis of Melting and Melt Flow Behaviour in Extrusion Deposition Process

Karandikar, Aniket (2016) Numerical Analysis of Melting and Melt Flow Behaviour in Extrusion Deposition Process. Masters thesis, Indian Institute of Technology Hyderabad.

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Abstract

The Extrusion Deposition Process is a recently developed additive manufacturing process. In this process, an Archimedean screw placed in a heated barrel is used to melt and feed the polymer. The part is fabricated by depositing the molten polymer in layer by layer fashion. The surface finish and strength of the parts fabricated by Extrusion deposition process depend mainly on the temperature and the viscosity polymer coming out of the extruder. The viscosity and temperature of polymer melt depend on the melting process and the flow of molten polymer in the extruder. Melting of polymer is a complex phenomenon which changes significantly with material properties and process parameters. Accurate prediction of melting process requires complex heat and mass transfer analysis. Development of a generalized model to accurately capture the effect of all parameters and material properties has been proven to be a complicated job. Due to the lack of a generalized model, numerical study is required to accurately model the melting process in the extruder. Present study is based on the numerical predictions to accurately model the melting of the polymer and to study the effect of the process parameters on the melting process and melt temperature.

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IITH Creators:
IITH CreatorsORCiD
Item Type: Thesis (Masters)
Uncontrolled Keywords: Extrusion Deposition, Melting, Polymer flow, numerical analysis, TD675
Subjects: ?? sub4.9 ??
Divisions: Department of Mechanical & Aerospace Engineering
Depositing User: Team Library
Date Deposited: 24 Aug 2016 09:06
Last Modified: 24 Aug 2016 09:06
URI: http://raiith.iith.ac.in/id/eprint/2679
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