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Analyzing & Optimizing Stiffened Panels / FEM Viewer of grid stiffened panel
« Last post by garyjh on August 19, 2019, 07:29:06 AM »
Can the FEM viewer have 0 & 90 directions added or local co-ordinate axis systems to better view the stiffener spacing?
General Discussion / Re: Local Postbuckling applicability
« Last post by Stephen on August 16, 2019, 11:38:24 AM »

Local postbuckling is applicable for our uniaxial-stiffened panel concepts. We have previously validated it against Z-stiffener panels (as you saw in our documentation), but recently completed  similar verification exercises for Hat-, I-, and T-stiffened panels.

Although I am not aware of any existing validation data for blade stiffeners, the methodology is applicable.

General Discussion / Local Postbuckling applicability
« Last post by cpoteet on August 16, 2019, 10:11:15 AM »
I am considering using the local postbuckling option, and was wondering if it was generally applicable to all of the concepts.  I read through the documentation about it being used with Z stiffeners.  Would it be accurate for integral blades as well?  Thanks, Carl
Miscellaneous Software Topics / Re: Abaqus Import Error
« Last post by Stephen on August 14, 2019, 07:50:49 AM »
This error message was due to a bug with the sorting of Abaqus load cases. The temporary workaround is to re-organize the load cases in the Abaqus input file into alphabetical order and re-running the FEM before import.
Miscellaneous Software Topics / Re: Abaqus Import Error
« Last post by Stephen on August 12, 2019, 03:34:47 PM »

I am reaching out via email to get more information.

Miscellaneous Software Topics / Re: Abaqus Import Error
« Last post by alanazahn on August 12, 2019, 08:25:32 AM »
I have rerun the deck a few times with different load case names and it's still giving the same error. It is showing appropriate results in Abaqus viewer and all of my entered load cases are showing in the output deck results, so I'm not sure what else I can try. I didn't change the frames at all, so I would imagine the defaults should be fine and wouldn't cause an issue.

Miscellaneous Software Topics / Re: Abaqus Import Error
« Last post by Stephen on August 08, 2019, 02:24:18 PM »
Hi Alana,

It looks like this error occurs when the results (ODB) have different loadcases or number of frames in the input file. Is it feasible to re-run the FEM in its current state, and create a new project referencing the FEM and the new results file?

If that still produces the error, we may need to investigate further.

Miscellaneous Software Topics / Abaqus Import Error
« Last post by alanazahn on August 08, 2019, 12:14:22 PM »
I am trying to import an abaqus model with a few different load cases, but every time I try I keep getting this error:

System.InvalidOperationException: Abaqus load case names are out of sync. Frame=2 StepLoadCaseName=GUST-1GFrameLoadCaseName=SIDEGUST1G
   at HS.FeaImport.AbaqusOdbForceImporter.Import()
   at HS.FeaImport.ForceImporter.Import()
   at HS.FeaImport.FeaImportProgram.<>c.<Main>b__0_0(ForceImporterInput input, Action`2 statusUpdate)
   at HsCommon.ProcessMonitor.MonitorService.RunWorkerFunction[TIn](Action`2 runTask, Func`2 parseCommandLine, String[] args)

I have tried renaming the load cases, as well as turning off all load cases except one, and I still get the same error. If I click OK I can move on and select my components in my model, as well as do a detailed sizing, but the error pops up again even if I use User Loads rather than FEA loads. Do you know how I can fix this error? Thanks for your help!
Scripting / Re: Creating Assemblies
« Last post by RobDexter on August 02, 2019, 05:37:12 AM »
Just a note - watch the Excel cell formatting.
I exported component IDs in assemblies from Hypersizer and Excel sneakily re-formatted component range 01:10 as a time.
While 01:10 showed on the sheet, the cell actually contained 01:10:00.  This led to an empty assembly when importing.
Format the column as text before exporting and all's well.
Panel Buckling / Re: Buckling panel orientation relative to material direction
« Last post by Brent on July 23, 2019, 11:43:14 AM »

From an analysis perspective, we recommend to align the material axis to the assumed buckling x-span direction. HyperSizer uses the material direction to compute the panel spans and radius of curvature. Unfortunately there is not a way in HyperSizer to assign an angle between the material axis and the panel assumed x-span direction.

If you update the material axis in HyperSizer, be sure to recompute the buckling spans for that component. This option is available in the component drop-down in the FEM viewer. See link to help system below:

Hope this helps.

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