Constraints not Satisfied error & Slice the Simulation results

[Anonymous]

1. In SIMULATION: See attached or imagine a simple CONE washer with flats at the top and bottom. Apply pressure (or displacement) on the top surface diameter and ONLY fix the Z axis displacement for the bottom surface. Every combination gives an error such as:
   
   "There are probably not enough structural constraints"
   
   and the simulation results are empty.
   
   Imagine a cone washer with flat top and flat outer bottom bearing surfaces (Dorman makes a flanged lug nut that has a washer like this attached to their nut). I can apply pressure (or Z displacement) to the top bearing surface, and I need to only fix the Z axis on the bottom bearing surface.
   
   
2. Also, if I try to displace only the Z axis on the top surface and fix only the Z axis on the bottom surface (and then look at the stresses), I get the error, 
   
   No structural load applied.
   
   Fusion 360 is far far easier and more powerful than the free z88 product (FEA only), but z88 lets me fix only the Z axis on the bottom bearing surface and apply pressure on the top bearing surface.
   
   
3. Also, it would be very convenient for users to be able to SLICE the Simulation results along a PLANE. See attached. Again z88 lets users do this easily. The new Fusion 360 lets us look into the Simulation results, but not a slide simulation result (see attached examples from Fusion 360 compared to z88).

Even with this, Fusion is the best and easiest CAD/CAM package I have ever seen (but I do not have much experience in this field). Thank you for making such a package available for startups and students who just want to play with designs.

I never knew CAD, FEA, CAM could be so integrated and have such an easy user interface.

Thanks,

Geoff

[tomas.bujnoch]

wrt #3: Clipping planes are expected to come out with January release. Implementation is already on the shelve. Clipping plane is a bit different from slicing plane (sometimes called section plane or cutting plane) but hopefully clipping plane will allow you to set up a plane and see the results on the planar capping surface. Real slicing planes will hopefully come out with some of subsequent releases.

[jan.vonasek · Accepted solution]

Hi Geoff,

For point #1 and #2 you need to check Remove Rigid Body Modes option in settings.

Regards,

Jan

[Anonymous]

Thank you. That worked perfectly.

[Anonymous]

I look forward to the update. Thanks!