unable to generate 3d mesh

hemanth kollipara_20292
hemanth kollipara_20292 Altair Community Member
edited April 4 in Community Q&A

Hi, I am unable to generate 3d mesh from 2d surface mesh. When I am trying to do I am encountering this problem that is attached in the image. The process is as follows: first I am generating 2d mesh for the component which is divided into two sections, therefore I am generating 2d mesh separately. Then I am performing nodal equivalence so that I will have mesh connection between the two sections. In the final stage I am trying to generate 3d mesh using the before mentioned 2d mesh as anchor nodes. If you want I can share the file. 

Note: If I am not performing the nodal equivalence I am able to perform the 3d mesh but in the results I cannot see the continuity of displacement.

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Answers

  • Paulo  Libório
    Paulo Libório New Altair Community Member
    edited April 3

    Hello Hemanth,

    Can you send an image of your model? If both components should have nodal equivalence, why not boolean combine or stitch them together? 

    The error suggests connectivity issues between selected elements, in a way that they don't form a closed volume.

    Kind Regards,
    Paulo Libório.

  • hemanth kollipara_20292
    hemanth kollipara_20292 Altair Community Member
    edited April 3

    Hello Hemanth,

    Can you send an image of your model? If both components should have nodal equivalence, why not boolean combine or stitch them together? 

    The error suggests connectivity issues between selected elements, in a way that they don't form a closed volume.

    Kind Regards,
    Paulo Libório.

    Hi paulo, here is the image unfortunately I was unable to capture the photo at the time of error. So, in the image you can see a dark blue line(drawn by hand), the error was coming along with a red line that looks similar to the blue line, stating the error that I was previously mentioned. orange colour region is design space and pale blue is non design space. And I have discovered that I am unable to obtain displacement continuity not just in that place but in some other regions too. 

    furthermore, the reason not performing boolean operation was I am having a 3mm of non design space below the load acting face, therefore I want to conserve that 3mm thickness while able to alter my topology optimization conditions. I did not tried stich till now, nevertheless I think I can give that Process a try but theoretically do you think that will work?

  • Paulo  Libório
    Paulo Libório New Altair Community Member
    edited April 3

    Hi paulo, here is the image unfortunately I was unable to capture the photo at the time of error. So, in the image you can see a dark blue line(drawn by hand), the error was coming along with a red line that looks similar to the blue line, stating the error that I was previously mentioned. orange colour region is design space and pale blue is non design space. And I have discovered that I am unable to obtain displacement continuity not just in that place but in some other regions too. 

    furthermore, the reason not performing boolean operation was I am having a 3mm of non design space below the load acting face, therefore I want to conserve that 3mm thickness while able to alter my topology optimization conditions. I did not tried stich till now, nevertheless I think I can give that Process a try but theoretically do you think that will work?

    If you check the option Keep Common Interface when doing a Boolean Combine operation, then the solids will not be merged. They'll share the surface where they intersect but will still be separate solids, in a way that the mesh should be 100% equivalenced.

  • hemanth kollipara_20292
    hemanth kollipara_20292 Altair Community Member
    edited April 4

    If you check the option Keep Common Interface when doing a Boolean Combine operation, then the solids will not be merged. They'll share the surface where they intersect but will still be separate solids, in a way that the mesh should be 100% equivalenced.

    Hi paulo, I tried the boolean operation and it worked. Moreover the continuity in the displacement of the result is also perfectly aligned. Thank you so much for the help.