a hanger
32
221
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updated May 11, 2024

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Just for the fun I calculated, by Finite Element Method, the maximum weight the hanger could take if printed with 100% infill and using Prusament PETG. I have used the Prusa Technical Data sheet which indicates a Tensile Yield Strength [MPa] = 46 MPa

Force

[Newton]

Max Stress Peak

[MPa]

Max Displacement

[mm]

50157.6
752311.5
1003115.4
1253819.2
1504623
1755326.9
2006130.7

In theory the hanger could take up to 15 Kilograms before permanent deformation occurs. However the Prusa data was extracted from a tensile test with the force perfectly aligned with the printing lines, such as this:

Whereas on the hanger the printed lines are bent, because the snake geometry. I would say that by applying a 30% reduction margin, because the geometrical differences, the snake could take easily up to 10 Kg. I will do the real life load test with water 1L bottles when I find the time and post here!

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