Simulation and Design of Extrusion Dies
Bogale, Kirubel (2011)
Arcada - Nylands svenska yrkeshögskola
2011
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Julkaisun pysyvä osoite on
https://urn.fi/URN:NBN:fi:amk-2011061411985
https://urn.fi/URN:NBN:fi:amk-2011061411985
Tiivistelmä
The aim of this engineering thesis was to design and simulate a die for a rectangular pro-file. The project consisted of studying melt flow characteristics of plastics and how the die structure should be set in order to get the desired shape. After the die has been de-signed on 3D Solid edge design software it was simulated on COMSL flow simulation software. On the simulation software it was easy to study how the melt flows and in which part of the die is the shear stress and strain strong and weak.
The drag flow and pressure flow were then extracted from the screw parameters which lead into the calculation of the operation point and the operating pressure for the die.
It was also possible to calculate the mass flow rate and the velocity drop. And finally die optimization of die profile for rectangular shape was done.
The drag flow and pressure flow were then extracted from the screw parameters which lead into the calculation of the operation point and the operating pressure for the die.
It was also possible to calculate the mass flow rate and the velocity drop. And finally die optimization of die profile for rectangular shape was done.