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Additive Manufacturing

06 Jul

ME 6180 – Additive Manufacturing
Summer 2018
Homework 4
Due date: July 6, Friday 5:00 pm in PILOT dropbox
1. Consider that you are using an extrusion based ABS printer. Calculate the required heater
power, total pressure drop in liquefier, and motor power for extrusion at
steady state
condition
for deposition speed of 0.5, 1, 1.5, 3, 5, 10, and 50 mm/s and plot them on three
separate graphs. Use the following data:
m = 2.16
= 7.4 x 10-5 (kPa)-m s-1
= 900 kg/m3
cp = 1500 J/kg-K
D
1 = 1.8 mm
L
1 = 10 mm
Some required data is missing that can be found from literature.
2. The generalized heat equation for laser melting is given by

 
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