Learning Forum

[knnn]

I have imported an assembly and applied all the BC's I need to run my simulation. The only problem is my mesh, which I auto generate. It seems I need to increase mesh size.. but it doesn't tell me where or by how much. What should I do to overcome this error?

[peteroznewman]

nPlease insert a close up image of the geometry that has the yellow failed obsolete mesh indicated. The corrective action is usually to perform some geometry simplification/idealization.n

[knnn]

^ the obselete mesh is in yellow. However on the other side of the geometry, some parts that were fine meshed are now failed, and some that were failed are fine. Refer to image below. I tried changing the span angle center from coarse to medium and it froze my computer.nn

[knnn]

Correction, even changing the span angle to medium provides the same result with the same error but with fewer bodies, although it does leave some bodies without any meshnnSome geometries have x's and check marks while others have just check marks, whats the difference?nn

[peteroznewman]

The checkmark means it successfully meshed.nThis looks like a gearhead electric motor. Why are you meshing this? Suppress that body and replace the mass with a point mass if you are doing a Dynamics simulation.nThis will probably mesh if you set a body sizing to a smaller value such as 1/2 the thickness of the bottom flange.nOpen the Geometry in the CAD tool such as SpaceClaim and delete all the features of these hubs until they are just a simple cylinder with a hole in the center.nYou need at least two elements through the thickness of any thin body or you can midsurface it and mesh with shell elements.nWhat is the purpose of your model? What output do you want from the analysis?n

[knnn]

Hi Peter,nThanks for your response,I simplified the geometry and now the simulation runs, but it doesn't do any post-processing due to some shared license issue? It says my shared license won't allow that operation -> something along these lines. I don't understand the error, I'm running the mechanical enterprise license. I made some changes and ran the simulation again.The purpose of this simulation is to see how the movement of the pod at a constant velocity over a bump on our track affects the response of our shocks -> represented by a damper up top. Since there's 8 of them, running a ansys simulation is very useful to gather information to how our shocks will react. n

[knnn]

Theres a different clamping force on the wheels at the bottom, I have been representing that with a remote force. Is that a acceptable? To apply remote forces to represent clamping forces? I hope the remote force is not causing any problems while the initial velocity condition is applied.n

[peteroznewman]

nIf you leave SpaceClaim open, that is taking the license Mechanical needs. Close SpaceClaim.nRemote Force doesn't add any damping that you are getting on the top damper.n