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Topics related to geometry, meshing, and CAD.

Geometry not showing in Meshing

    • JLB236
      Subscriber

      My geometry looks good in Design Modeler (https://i.redd.it/zhlbudmhw6s31.png), but nothing appears in Meshing (https://i.redd.it/buve54xow6s31.png).  I tried updating the geometry, and creating a new project, and nothing changed.  You can see on the left that all of the bodies are present, but it didn't even update the body names.

      My SpaceClaim file says there are 8 split edges and 10 extra edges that can't be fixed, but there are no gaps or missing faces.

      Any suggestions on what my problem might be?

      Files (made with ANSYS 18.1): https://drive.google.com/drive/folders/12WB-0pRISST6nSuDy2OsnxIv1tZDq03v?usp=sharing

    • peteroznewman
      Subscriber

      In DesignModeler, I see some geometry that is about 15 meters in diameter.


      In Meshing, the ruler shows the view is zoomed out to show objects 200 million meters in diameter.


      Did you try pressing F7 to Fit the View?

    • JLB236
      Subscriber

      Wow, I'm not sure why I didn't look at the scale.  You're right, it's doing the same thing for me.


      When I zoom in, I can see the object, but it's so "zoomed in" that moving around is extremely choppy and it makes the object fly all over the place.  When I use F7, it goes back to the massive scale zoomed out.


      I'm guessing that means I have some object that's way far away from the main object, right?  If that's the case, how would I try to find the object since it's apparently not present in the geometry file.


      Or is there something wrong with my settings?  What setting would the default zoom be under?

    • peteroznewman
      Subscriber

      You can hide all the objects in the tree and make them visible one by one, and use F7 to see which one causes the tremendous zoom out.


      Where is the Global Coordinate System relative to the geometry?  If all the geometry is 200 million meters away from the origin, that can be a problem.

    • JLB236
      Subscriber

      Good ideas!  The 3rd (LBack) and 5th (LSide) bodies are the problem.  The origin is at the center of the geometry's base, so that's not a problem.


      In Design Modeler, zooming to every body works fine, but those two bodies zoom to 40 m.  Not as bad as in Mesh, but still too far out.


      In SpaceClaim, zooming to every body works, which I guess means something is messing up during the conversion from SC to DM, and then it gets even worse from DM to Mesh.


      Any ideas what could cause that?

    • Rob
      Forum Moderator

      Can you check the geometry looks as you'd expect. Assuming you're using a multibody part in DM, what happens if you use the Share Topology tool there?


      Note, I can't view the image: staff aren't allowed to open/download attachments. 

    • JLB236
      Subscriber

      I didn't find an exact solution to the problem, but I got around it by starting over using a STEP geometry file instead of IGES.  The STEP works fine without the zoom problem.

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