topic Re: Fusion 360 error: maximum mesh size of 7600000 elements as been exceeded in Fusion Design, Validate & Document Forum

Fusion 360 error: maximum mesh size of 7600000 elements as been exceeded

Anonymous — Mon, 02 Nov 2020 21:37:10 GMT

Is it possible to increase or remove the maximum mesh size for NASTRAN in Fusion 360? I'm trying to mesh and run a set of simulations in Fusion, but keep hitting this maximum mesh size error:

Error: The current maximum mesh size of 7600000 elements has been exceeded. Please increase the average element size and/or simplify the model and try solving again.
Error: Internal solver error

This is running on a cloud workstation with terabytes of memory of available, so exhausting memory isn't a concern and simulation solve time can take as long as it needs. Meshing completes seemingly successfully and these errors are only thrown when the simulation tries to run. I don't pretend to be a FEA expert, but it has been simplified as much as possible and is just a large assembly with a wide range of part sizes.

Do I need to modify NASTRAN.INI? Is there a flag I flip somewhere? Any help on removing the maximum mesh size would be a huge help.

Apologies if this isn't the right forum. Never was quite sure which product Fusion's NASTRAN implementation was part of.

Re: Fusion 360 error: maximum mesh size of 7600000 elements as been exceeded

tomas.baborsky — Mon, 24 Jan 2022 17:54:42 GMT

I have same problem....

Re: Fusion 360 error: maximum mesh size of 7600000 elements as been exceeded

anders_nielsenJWKXG — Mon, 04 Sep 2023 15:24:11 GMT

I have the same issue here in September 2023. I have just reported it to Autodesk.

Re: Fusion 360 error: maximum mesh size of 7600000 elements as been exceeded

TrippyLighting — Mon, 04 Sep 2023 21:18:17 GMT

~~Please share more details. Perhaps explain exactly what you want to do.~~

Scratch all that. I did not see that this was a simulation error.

Re: Fusion 360 error: maximum mesh size of 7600000 elements as been exceeded

anders_nielsenJWKXG — Mon, 04 Sep 2023 22:40:55 GMT

I think one needs to use workarounds, when hitting that max. Like local mesh refinement or adaptive mesh to reduce the number of elements in the simulation. Or reduce the model.