Learning Forum

[MichSS]

Hi,

I was trying to enable adaptive meshing on a certain region of my 2D shell part with plane strain element type (elform=13). I used *CONTROL_ADAPTIVE and *CONTROL_2D_REMESHING_REGION by defining a box/shell. However the job always terminated without giving errors at the remeshing step (adpfreq).

Everything worked fine when I applied adaptive meshing to the entire part without using *CONTROL_2D_REMESHING_REGION. Can anyone help to figure out what happened on this issue? Thanks in advance!

[Ram Gopisetti]

Hi, 

I'm not entirely sure what the issue could be, as I have tested this on our side using our benchmark models. Setting LTYP to 1,7 worked fine for us. Below is the configuration we used:

In CONTROL_ADAPTIVE, it is necessary to set ADPTYP=8 and appropriately tune the ADPFREQ and ADPTOL parameters. This should be followed by the definition of CONTROL_2D_REMESHING_REGION.

For improved traceability and to assist further, I recommend trying with a newer version of the solver, which should provide more detailed, verbose output from the solver.

Cheers, Ram 

[MichSS]

Hi Ram, thanks for checking these keywords. I downloaded the newest version and the result is difference from the one I obtained my old version. But a new problem appeared: the box I defined for remeshing was completely separated from the whole part at the remeshing moment, and then the job was terminated.

I was trying to apply adaptive meshing around the crack tip of my model since the elements there were severely deformed. I did use ADPTYP=8 and I think I used reasonable ADPFREQ and ADPTOL(characteristic element size). I am also using implicit solver and hourglass control. Do these factors matter? Would it be possible for you to share a benchmark model that uses CONTROL_2D_REMESHING_REGION with a box so that I can learn from it? Thanks!

[Ram Gopisetti]

Hi 

Added cards should not influence the behaviour of the 2D_REMESHING_REGION. Unfortunately, we, the ANSYS employees, are limited to sharing any files from us except those available publicly. 

I guess others can shed some light on this matter. 

Cheers, Ram