Thursday, July 19, 2018

Week 4 - Drop Test Testing, Thermal Load Calculations and Showcase Model Manufacturing

This week was to finish up the simulations for the drop test, as well the thermal loads calculations. Unfortunately, I was unable to get the honeycomb structure back into the Solidworks, so the currents shall be used to see how the stress flows through the parts after the impact. For what can be determine, the stress accumulates around the openings of the parts. The stress doesn't go beyond what the ultimate stress of the PLA, so it should break on impact. I also did the calculations to determine the heat load on the full scale cabin, and also determine the cooling load needed maintain the car within comfortable temperatures. We also finished manufacturing the showcase model, though we had to sand down the inserts a bit to fit the furniture together. Lesson learned from this difficulty was that to make sure there was enough tolerances for the part to fit together. We also decided to make another side part with a door on it for the show case model.

On the demonstration model, we also fit in windows to the door made from acrylic. These windows were hand made, so they didn't fit perfectly. We also used superglue to attached them to the parts, though it was a messy process. In the future, it would probably be best for the part to have some kind of ledges for the windows to attached to instead.



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