Learning Forum

[Raza14]

Hello!

While running the 3D simulation for electric machine, I receive the following error:

"The quality of some mesh elements is not acceptable for solution. Please check the geometry for issues in the following location (in meters): X=0.111453, Y=-0.023272, Z=0.0179491."

Need guidance on how to remove this error?

[Mark Christini]

The geometry is not acceptable.  It may be invalid or dirty.  You will need to manually clean this up to proceed.

In the Maxwell 3D modeler, zoom in to the location X=0.111453, Y=-0.023272, Z=0.0179491 to identify the bad object or objects. One strategy is to then make the probable object a "non-model" object and try to resolve.  If successful, this confirms the bad object.

Once the bad object is confirmed, you can try to redraw and remove any small details, gaps, sliver objects, touching curved objects, ... which may be the cause of the meshing failure.

[mbeliaev]

if you are 100% sure in your mesh and are ready to take risk you can disable this mesh error, please set windows environmental variable

SKIP_MESHCHECK =1

this will skip mesh check

 

Maksim

[Raza14]

Thank you for the recommendations.

Firstly, i located the point in the model, selected that object as non-model and run the simulation again. This time the error was "Process '3dtds' terminated abnormally.  It may have run out of memory or could have been killed by the user."

Then i redrew the model and simulated again, this time the same error "Process '3dtds' terminated abnormally.  It may have run out of memory or could have been killed by the user." 

Meanwhile, the other simulations are running on the same server. 

[mbeliaev]

What is the version you are running ?

 

Do you have enough RAM?

[Raza14]

I am using the 2018 version.

 

The PC has 16 GB RAM.

[mbeliaev]

first of all I would recommend to upgrade to version of 2020R1 as soon as it will go live. We will have some mesh improvements and this error about qulity should not appear

 

regarding RAM, it is too few. Have you opened resource monitor and checked RAM availability during solution process?

in 99% of cases job stopped due to "out of RAM". How many mesh elements do you have?

[LaurentM]

Hello,

I have the same problem as Raza14 for a Maxwell simulation. I created a point at the special location but I don't see any ill-defined geometry. It is located at the interface between a thin layer of a perfect conductor and a thick silicon substrate. Do thin layers require a special preprocessing technique (in the mesh operation tools)?

Also, I wanted to apply the fix you propose, consisting of switching on the windows environment variable "SKIP_MESHCHECK" but I couldn't find it in the registry editor. Is it because I'm using Maxwell 2018? 

Could you please indicate me the path to this variable?

Thank you in advance for you help

[mbeliaev]

you do not need registry

 

 

open run (win+R)

SystemPropertiesAdvanced

add variable