Fatigue Wizard Error Message

[nosborne]

I am trying to run the fatigue wizard with an SN based scenario with a small solid element model. I get the error message shown each time as soon as I start the fatigue analysis.Any ideas anyone ?

[S.LI]

This is a very common error report, which looks like something wrong in code.

What is the base of your Fatigue analysis, Linear Static, Nonlinear Static, or MES?

[nosborne]

I am using the results from a linear static analysis.

[DSchS]

I have the same problem.

LE analysis with 303 parts. It seems to be a problem regarding the model size (number of parts).

Someone can confirm this?

[DSchS]

Sorry, it is almost the same...

Run-time error '9':

Subscript out of range

[nosborne · Accepted solution]

Solved the issue by doing a repair of SImulation files through Control Panel.

[DSchS]

Sorry, but I thing I do not understand the solution procedure. Do you mean I need to repair the Simulation instalation in the windows control panel?

[nosborne]

Yes - go to Windows "control panel" and then to "Programs and Features". Right click on "Autodesk Simulation ..." and then choose the "Repair or Reinstall" option and then select "repair".

As a side note I have received the same error shown (run-time error 6) on a model that consisted of Tetrahedral elements only. When I changed the model to Bricks it ran fine with fatigue.I will send this issue into Autodesk to learn more.

[PipePakPat]

The error message: "Run Time Error '6': overflow" indicates that the model contains either more elements or more nodes than be considered at one time by the Fatigue Wizard.  Unfortunately, the Fatigue Wizard does not share the same size capabilities as does the Autodesk Simulation interface.  For this reason, it is possible to create finite element models that exceed the limitations of the Fatigue Wizard.  You may experience an increased capacity if using Autodesk Simulation Mechanical/Multiphysics 2013 (compared to previous versions) when run on 64-bit computers having 4 GB RAM or more, but this does not guarantee this error can be avoided.

To work around these size limitations, I have developed utilities to isolate portions of the whole model, so that the small portion of the larger assembly can be analyzed in the Fatigue Wizard.  One would identify the "area of interest" in the larger stress model, then create a new model having only that portion of the total model's geometry.  It would then be possible to use a utility as a part of the 2013 software release to interpolate deflection results from the original model to the "sub-model", then run the stress processor on those deflections.  This new "sub-model" can then be analyzed using the Fatigue Wizard.  This method, however, is cumbersome, since it requires an additional model, additional steps and running commands from the DOS prompt.

The alternative to this method would be to re-created the model using larger elements in the whole of the model, such that the mesh is only refined in the "area of interest".  As long as the resulting model has 250,000 nodes or less, then it can be analyzed using the Fatigue Wizard.

Feel free to let me know if you have further questions.  If you choose, you may also submit your request to technical support through the Autodesk Subscription Center <subscription.autodesk.com/>.

[TommyBreaux]

Pat,

[TommyBreaux]

Pat, it is now  2013,  we are using Simulation 2014.  Why are we still having an issue with the size of the model or the number of nodes that Fatigue Wizard can handle?

Thanks,

Tommy Breaux

[ayberkyagiz]

hi...

I think it is not about number of materials but rather about the unit system that we use.

Do you use dots or comma to seperate numerical values?

I tried to perform analysis with very low number of elements... But still not working.

[nmt]

Pat, woult it be possible for you to share the workflowfor your "submodelling" technique, this would be very helpful.
Best regards /nmt