workbench 8 post processing / training

[martin99]

Hi everyone,

I have been using IDEAS for about 6 years and have really been struggling with the structural non-linear stuff I have been doing recently. Over Christmas I was given access to Ansys workbench 8 and managed to get some really good, nicely converged non-linear results. I cant believe the stability and speed of Ansys. Here is the thing, I now have very limited time at the Ansys machine and I need to post-process the results but workbench seems quite limited. Is there a whole post-processing ‘module’ in workbench I’m not using/finding? For example: I have an assembly of components and want to view the max values in each component. To do this I suppress all the other components and then move the sliders down on the ‘legend bar’ until it just displays the range for that component. There must be a way to automatically rescaling the ‘legend’ so just to show the values for the current component/surface etc. I’m sure it is me just not finding the controls I’m after so all help/tips would be greatly appreciated.

Hopefully be able to wangle an Ansys seat on the back of these results, can anybody recommend any training courses in the UK.

Many, many thanks in advance.

Martin

 

[Drej]

To view results (stress, strain, etc.) for a specific component, first right click on "Solution" in the left-hand tree, then follow "Insert" then click on the item you wish to view (stress, deformation, etc.). Once you do this, look below the left-hand tree in the "Details" area, where you will see a "Scope" section. Select the component you wish to apply the results to and then hit "Apply" in the scope section. The result will only be shown for that component (hence the word "Scope&quot. In terms of training, it depends where you are in the country. The following is an ANSYS specialist

http://www.wildefea.co.uk/training/courses.htm

and will provide training specific to your requirements.

The best of luck,

-- drej --

 

[martin99]

Cheers for that. One problem though. When i use the method you describe it adds it to the solution tree but the solution has to be rerun to get the results. As the models are 'long running' non-linear this would take to long.
Is there not a method that simply manipulates the results from the last run, 'real' post-processing?

Many thanks

Martin

 

[Drej]

If you do a full solve and then go through the above procedure I outlined, you will not need to do a full/complete solve again, only a solve for that result item, which should take seconds. If a full solve is enabled, this means you have altered something else within the model, forcing Workbench to carry out a full solve (such as changing boundary conditions, materials, loads etc.). Of course, the best method would be to select all the results required prior to doing a full solve.

-- drej --

 

[martin99]

Cheers for that, I saw the solution monitoring bars pop up and panicked that it was solving it all. I’ll give that method a proper try later. I can definitely see the benefit of selecting the areas first, especially in the model I have created, as there is only a relatively small area of this large model that I am interested in. The area of interest is some way away from the quite coarse loading area but this approximate loading is messing up the convergence. If I had pre-selected to monitor the results in the important area it would have been easier to see when the results had converged.

Just a quick question on convergence, I’ll start a new thread if your busy though.
When I re-open a project the convergence history can be displayed OK but re-running (to further improve convergence) the solution seems to reset the solution monitoring graph not add the latest results to it. Is there a file somewhere I need to save when I close the project? What are the implications of saving/not saving the Ansys db.

Many, many thanks again

Martin

 

[Drej]

Unless you intend to use ANSYS in its "full" environment (accessed via START > Programs > ANSYS 8.0 > ANSYS), you do not need to save an ANSYS db (database) file. The database used by Workbench is the jobname.dsdb (ds = design space, which is what Workbench used to be called).

For an analysis that contains a convergence history, this will be reset every time you do a full solve, inline with the parameters set in the convergence controls section.

 

[martin99]

Many thanks for all your help.

Martin