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Correct Load/Constraints for Compression Simulation?

jamey.priceQ4SET
Observer

Correct Load/Constraints for Compression Simulation?

jamey.priceQ4SET
Observer
Observer

I'm relatively new with Fusion 360 and its Simulation package. I'm trying to simulate a compression test on a cylindrical part. Think a soup can type structure with a couple other stress concentration features. First attempt was on the part by itself. Load vertically (Z) on a split line along the top of the can. Has a few constraints to make it run: 1) split line on the bottom with Uz & Ux=0 (it could get longer), 2) the vertex of that bottom split line at the can base fixed, & 3) a vertex on the upper split line at the can base with Ux=0. My concern with the results is that the adjusted deformation shows that the soup can deform about those upper & lower split lines. Like doing the compression tests between infinitely strong pieces of floss, instead of flat surfaces. So my next attempt was to squish the soup can between thick plates. Contact between the bodies was Separation. Same constraints on soup can. Bottom plate surface Fixed. Top face of upper plate loaded vertically & 1 vertical side of the plate constrained to no planar movement (Ux & Uy=0). I still have doubts in the results because the adjusted deformation of soup can still shows that pinched in deformation at top & bottom. Am I approaching the Loading & Constraints correctly? Is that pinched in deformation real or just a factor of the adjusted deformation? Is a static study acceptable or do I need to go to non-linear? My ultimate goal is to adjust wall thickness and stress concentrations so that I don't get yield at a specified design load. Any insights would be appreciated.Squish SoloSquish SoloSquish between PlatesSquish between Plates

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TheCADWhisperer
Consultant
Consultant

Can you File>Export your *.f3d file to your local drive and then Attach it here to a Reply?

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jamey.priceQ4SET
Observer
Observer

Stupid question.  How do I post those files?  I see the Hyperlink but not the Attach.

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TheCADWhisperer
Consultant
Consultant

File>Export

TheCADWhisperer_0-1648217693717.pngTheCADWhisperer_1-1648217722498.png

*.f3d or *.f3z to local C:/drive (on Windows, I don't know about Mac...)

TheCADWhisperer_2-1648217773868.png

Reply to this thread and click at bottom to add Attachment...

TheCADWhisperer_3-1648217792501.png

 

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jamey.priceQ4SET
Observer
Observer

Exporting the file wasn't the problem. Attaching it to the post was.  Now I see the the Drag & Drop files to Attach below.  More coffee needed.

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