Simulation Error: Surface Meshing

[Anonymous]

Hello,

I currently have a model that I have imported from sketchup and converted to a BRep model. Using this, I can then view the file within the simulation suite.

However, whenever I go to run the test I am getting failed simulations due to the meshing of the model. When I put the model into a simple static stress simulation I get the following error message when I try to run a simulation:

Meshing Error!

Phase: Surface Meshing

Description: Face interior

I am a bit confused as to how you can fix a problem with an interior face. I have only just started using Fusion 360 so I am a bit clueless to what is actually causing the problem.

Any help or tips would be much appreciated.  Please find .f3d and .obj models attached.

[TheCADWhisperer · Accepted solution]

Right click on the Mesh node in the browser and select Generate Mesh.

Re-generation of the mesh seems to fix the issue for me.

(You will also need to fix your material properties (no Young's Modulus or Yield Strength, and you should probably run this material (brittle) at Ultimate Tensile Strength rather than Yield Strength).)

[Anonymous]

Thanks very much for your help.  Is it possible to create a ceramics material with custom material properties or, alternatively, change the material properties of porcelain?

[Anonymous]

I am having the same issue but your method in your post didn't help me. Any thoughts about why? Here is the public link to my design. http://a360.co/2jcjyPh

[Anonymous]

Sorry but I'm afraid I don't know enough about the software to offer any advice beyond what was suggested to me.  I would advise creating a new post in the forums to ask how this can be solved.

[Anonymous]

I have a model I can only sometimes effectively mesh. I receive:

Meshing error! Phase Surface meshing Description : Face interior

I am still getting this error message as I work the problem looking for solutions. Meshing my model is a problem, but I have successfuly meshed the model before; it's when I want to perform a new study and need to re generate the mesh, that I run into the same message, it does not matter even if the mesh settings are as exactly as the successful model. Have attempted to remesh many times, have as many failures.

The material properties menus for the model mateiral 4130 look right to me, as your tutorial suggests.

What am I to do here in this situation? Stop running simulation studys? Please advise.

[John_Holtz]

Hi @Anonymous

I suggest that you create a new post since

• your model is different than the original model, so it will likely have a different solution
• this post has been marked as "solved", so some readers may skip over it.

Keeping separate posts for different models is helpful to us and to readers.

I would expect that the same model should mesh with the same settings in a different study. How thick is the tube? I wonder if round off errors will sometimes make the software think the inside surface is sticking through the outside surface, and sometimes it is okay. I would suggest a smaller mesh size to see if that solves the problem.

If it still does not mesh, please export the model ("File > Export") and attach it to your new post.

[Anonymous]

John,

Thanks for your reply. I will follow your suggestions, still having issues generating the mesh.

The tubes are thin, 0.8mm wall thickness, about 0.030" thick, these are common steel tube wall thicknesses for hi performance bike tubes.

Can you offer any ideas why the mesh sometimes does generate? If I'm using the same model, can I simply use the same mesh for other studies?

What do you make of the apparent inconsistency that sometimes the mesh does generate, but for other studies it won't within the same model?

Thanks for your input.

Chris

[John_Holtz]

Hi Chris @Anonymous

I do not know why the model will mesh in some studies but not others. Something else to try is to clone the study again and see if it meshes in the new study.

If you are able to share the model, please export it ("File > Export") and attach the .F3D file to your reply. Or you can send the file to me in a private message.