Learning Forum

[solmyr999]

Hello,

I am trying to simulate electric conduction at the surface of a 3 layers sandwich of materials using a ANSYS student license, The first one is 30 microns thick, the second one is 3 microns thick and the third one is 5 mm thick. The total piece is 6 by 40 mm.

At my points of loading I have my finest meshing of 50 microns element size. At the edges of my piece I have something like 0.5 mm element size.

In total, I have 81412 nodes and 56655 elements. I have read on the ANSYS forums that the limitation for the student license is 512k elements/nodes.

Since I am clearly under that limitation and still gets the license numerical problem size error when trying to solve, can someone explain me what my problem is and what I need to correct in order for the solver to work ?

Thanks in advance.

[Rob]

Mechanical limit is 32k, CFD is 512k.  

[Karthik Remella]

Hello,

Could you please let us know which product you are using and share a screenshot of the error message? This will help us identify the issue better.

Thank you.

Best,

Karthik

[solmyr999]

Hello,

I managed to find what was causing my issues after many many tries. I am using ANSYS electric in the ANSYS 2019 R3 student license, and there is a limitation in the number of elements + nodes of about 102k.

This limitation is indicated absolutely nowhere so, for anyone with the same problem, hope this helps.

I joined a screenshot of the error message but it's in french. It says the license contains numerical problem size limitations, and that I have exceeded them.

[Rob]

Ansys Electric looks to be Mechanical of some flavour: so you'll need to drop the model to 32k nodes.