[Tensian]

Dear all,

I am stuck in a problem that seems to be easy to solve but I am finding it quite complex.

I will explain it a little bit.

I have a geometry composed by 2 STP files. After some work with ProE I am able to import both in ANSYS Design Modeler (green check in Import 1 and Import 2 and no faults detected using "Fault detection tool"). So it seems geometry is OK.

I cannot share the geometry, but it is something like two boxes with a channel inside each part (it is a mould). There is some empty space between both parts (the space corresponding to the solid part that will be generated when the material is inserted into the mould).

At the beginning, the space of the the channel location is empty. So I proceed with meshing one part with the empty space. No problems in this stage (well I needed some virtual cells but that's all). In the other part the same behavior can be seen.

In a second stage, I filled the empty channel with the "Fill" tool in ANSYS DM. So now I have Box (body 1) and Fluid (body 2, the one generated with Fill tool). I mesh it without problems as well. Both bodies are included in a multibody part using "Form new part"

The problem comes when I want to mesh the complete geometry (the two parts together). Using fill tool I have:

Body 1: box 1
Body 2: box 2
Body 3: fluid 1 (the channel filled)
Body 4: fluid 2 (the other channel filled)

All bodies belong to the same part (Form a new part tool used again)

I am not able to obtain conformal mesh where the bodies are in contact. I have tried a lot of things: contact region , match group, mesh the part in several stages (first one body with channel, second the other...) but nothing seems to work. Meshing fails or the resulting mesh is not conformal.

I measured the distance between the two solids and it is 0. I guess this means they are in contact. Also there is a contact region under the Connections tab on the ANSYS MEshing tree.

Any suggestions will be really appreciated. I have no succeeded on this so far.

Thanks in advance.

[Kapi]

did u try to give edge sizing in both bodies with similar bias factor and hard behavior?

[sarangdalne]

Check if this works for you. Open DM insert the "ShareTopology" tool set it to imprints and then transfer your new model to meshing.

[Antanas]

Originally Posted by Tensian

Dear all,

I am stuck in a problem that seems to be easy to solve but I am finding it quite complex.

I will explain it a little bit.

I have a geometry composed by 2 STP files. After some work with ProE I am able to import both in ANSYS Design Modeler (green check in Import 1 and Import 2 and no faults detected using "Fault detection tool"). So it seems geometry is OK.

I cannot share the geometry, but it is something like two boxes with a channel inside each part (it is a mould). There is some empty space between both parts (the space corresponding to the solid part that will be generated when the material is inserted into the mould).

At the beginning, the space of the the channel location is empty. So I proceed with meshing one part with the empty space. No problems in this stage (well I needed some virtual cells but that's all). In the other part the same behavior can be seen.

In a second stage, I filled the empty channel with the "Fill" tool in ANSYS DM. So now I have Box (body 1) and Fluid (body 2, the one generated with Fill tool). I mesh it without problems as well. Both bodies are included in a multibody part using "Form new part"

The problem comes when I want to mesh the complete geometry (the two parts together). Using fill tool I have:

Body 1: box 1
Body 2: box 2
Body 3: fluid 1 (the channel filled)
Body 4: fluid 2 (the other channel filled)

All bodies belong to the same part (Form a new part tool used again)

I am not able to obtain conformal mesh where the bodies are in contact. I have tried a lot of things: contact region , match group, mesh the part in several stages (first one body with channel, second the other...) but nothing seems to work. Meshing fails or the resulting mesh is not conformal.

I measured the distance between the two solids and it is 0. I guess this means they are in contact. Also there is a contact region under the Connections tab on the ANSYS MEshing tree.

Any suggestions will be really appreciated. I have no succeeded on this so far.

Thanks in advance.

Check topology of your bodies.

Originally Posted by sarangdalne

Check if this works for you. Open DM insert the "ShareTopology" tool set it to imprints and then transfer your new model to meshing.

Imprint won't give conformal mesh unless mesh matching is used. For conformal mesh Automatic method for shared topology should be used.

[sarangdalne]

Originally Posted by Antanas

Check topology of your bodies.



Imprint won't give conformal mesh unless mesh matching is used. For conformal mesh Automatic method for shared topology should be used.

Imprints should also work for conformal mesh.

If share topology is failing then you can try connecting the faces manually using the "Connect" option. If you can share the model I can take a look.

[Tensian]

Dear all,

First of all thank you for your valuable suggestions.

Unfortunatly, nothing seems to work.

Share topology option fails (it crashes).I have tried to connect some faces, but as the faces of the bodies in contact are different, DM fails doing this operation.

It is quite strange, the Import command do the importation properly, and if I translate a bit the geometry, I am able to Unfreeze and/or Unite the two bodies, mesh them with conformal mesh (after Unite I have just one body instead of two) and simulate using CFX. But doing this I am destroying the internal piece of the mould...

Do you have any other idea? The situation is really strange. I have heard that importing parts in ANSYS is tricky, and also dealing with interfaces, but this is too much for me...

Thank you very much for the interest shown.