Ansys Workbench 12 Assembly question

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Discussion Overview

The discussion revolves around the challenges of assembling two solids in Ansys Workbench, specifically a copper jacketed lead bullet model. Participants explore methods for mating the solids and controlling their assembly, comparing it to experiences in SolidWorks.

Discussion Character

  • Technical explanation
  • Debate/contested

Main Points Raised

  • One participant inquires about the possibility of mating two solids in Ansys Workbench to use them as a single assembly.
  • Another participant suggests two methods: using contact surfaces for separate meshes or matching the mesh on the interface, though they express uncertainty about the latter's effectiveness.
  • A participant expresses confusion regarding the contact conditions in the tutorial and notes that their bodies did not move as expected when attempting to mesh them.
  • Another participant questions whether it is possible to import an assembly or CAD geometry with disconnected parts positioned correctly without mating them.
  • A participant shares their experience of successfully importing from SolidWorks but struggles with positioning the assembly along a specific axis.
  • A later reply indicates that the issue was resolved by using a body function and translation method to set coordinates for moving the model.

Areas of Agreement / Disagreement

Participants do not reach a consensus on the best method for assembling the solids, and multiple approaches are discussed without agreement on a single solution.

Contextual Notes

Some participants express uncertainty about the effectiveness of different methods for mating solids and the implications of mesh configurations on assembly behavior.

beho86
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Hello,
I am used to use Ansys classic in my work. I just started to learn Ansys Workbench. I am modeling a copper jacketed lead bullet. I modeled the copper case the internal lead part.

Now I have two solids. Is there a way to mate them, and use them as one assembly, of solids?

Thanks
 
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There are 2 ways. Either have them meshed separately and use contact surfaces to join them, or have a matching mesh on the interface. In the latter case I imagine it solves it without contact elements, but not sure. I don't have access to ANSYS these days, but here are some pictures from a tutorial -


[PLAIN]http://dl.dropbox.com/u/21857463/MatchingMesh.png
[PLAIN]http://dl.dropbox.com/u/21857463/Contact1.png
[PLAIN]http://dl.dropbox.com/u/21857463/Contact2.png
 
Last edited by a moderator:
Hello,
The picture in the tutorial you provided, the two bodies are already in contact, and you are defining the contact condition (such as no separation...), I tried the mesh, but I am not sure if that what I want. they body didn't move.

Here is a picture:

[PLAIN]http://img228.imageshack.us/img228/9561/bulletf.jpg

So, in solidworks I can just mate easily, and control them as an assembly, how can I do that in workbench?

Thanks
 
Last edited by a moderator:
I can't see your picture, but I misunderstood you. Somehow I assume you can just import an assembly or a CAD geometry having several disconnected parts already positioned where you want them but not actually mated. It doesn't allow that?
 
Here is the image: http://img228.imageshack.us/img228/9561/bulletf.jpg

I tried to import from solidworks, it works, but didn't know how to position it on a specific axis. I still think, I should be able to make them one assembly.

I will keep trying, hopefully someone can help me with this issue. thx
 
Last edited by a moderator:
Solved! I figured it out, you create a body function, and use the translation method, it will give you x, y, z coordinates to move the model to.
Thanks
 

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