I tried different options but the error still appears.

I did some tests. I'll tell you more.

I'm using calculation time 7.5.

The drill material is plastic kinematic, the material is SPG sand MOHR_COULUMB.

I wrote above which units I use.

I manage to make the first entry in d3plot, but at the next step an error occurs.

I changed the timestep parameters of the temperature solver and the HC and TC parameters in the MAT_THERMAL_ISOTROPIC settings (for drill and sand).


With these settings, the sand temperature is noticeably very high:



With these settings there are generally negative temperatures



Where to go next? What to watch or configure? Please tell me?