Query in ANSYS- workbench 1

[elogesh]

Hai,
Whether it is possible to assign boundary condition about local co-ordinate system in work bench?

I want to give boundary condition about local cylindrical co-ordinate system with origin at the same location of global cartesian system.

Regards,
Logesh.E

 

[Drej]

Unfortunately not. Local coordinate systems are used specifically for post-processing purposes only (to view results such as Sxx, Uz, etc. in a specified local system). This is due to Workbench being geometry driven. You can, however, apply localised cylindrical boundary conditions about this geometry using the geometry itself: this is achieved using the various "cylindrical supports" etc. (if that helps).

Best of luck,

-- drej --

 

[elogesh]

Hai,

Thanks and a star for reply.

I couldn't able to pick surface for cylindrical support condition. Have you faced any similar situation.

I want to know few more information.

Do you have design modeler along with design simulation.
If so how you rate it ANSYS - classic geometry modeler Vs Work bench design modeler?

Unfortunately, I don't have design modeler and felt handicapped with Design simulator without geometry rework.
The preparation of the model is done in Pro-E.But pro-E has the concept one geometry with single volume. We can't have multiple volumes with single part in Pro-E. So split & partition becomes an issue.

The second issue is the absence point mass element( Mass21).


Regards,
Logesh.E

 

[Drej]

Regarding your problem picking a surface for the cylindrical support: the surface you are picking will need to curved. If you pick a flat surface, Workbench will ignore it. Otherwise, this facility works fine.

It's also very difficult to compare DesignModeler with ANSYS itself in terms of pre-processing, as each has very specific functionality. Modeler is excellent for defeaturing and for generally preparing the geometry for meshing, but has very much reduced functionality for parametric design, which is where ANSYS is in a league of it's own. Also, within DesignModeler/Workbench everything is geometry driven, which can be quite a restriction in some instances (as you've found). I've found that it's best to have both DesignModeler and ANSYS available, or maybe Workbench along with a good CAD package, Solid Edge for instance. With Solid Edge you can split surfaces etc. and produce multiple volume parts very easily (with bi-directional associativity) - I'm surprised at Pro-E not being able to produce multiple volumes.

Finally, as you say, mass21 elements are not available. Only shells, solids and beams. Given time, I'm sure this and other much-needed functionality will be incorporated into Workbench.

Best of luck,

-- drej --