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Miscellaneous Software Topics / Re: Mass Discrepancies
« Last post by James on July 19, 2019, 04:40:30 PM »
Did you have NSM in your model? Do you see any 'added weight' reported on the options tab?

For future projects, before importing the FEM, deactivate the import/export option that prompts HyperSizer to import and store NSM.

To fix this project you can clear the added weight from the options tab, right-click and apply to all components in the project.

-James
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Miscellaneous Software Topics / Re: Mass Discrepancies
« Last post by James.rogers@nasa.gov on July 19, 2019, 04:36:59 PM »
To clarify, for the second option you mentioned, are you suggesting that I modify my import/export options within the "project setup" window?
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Miscellaneous Software Topics / Re: Mass Discrepancies
« Last post by James on July 19, 2019, 02:42:46 PM »
This likely has to do with non-structural mass (NSM). For smeared panels, HyperSizer uses the NSM field on the PSHELL card to represent the mass of the panel. Two things could be causing this..
 1. Incorrect mass units (lbm instead of slinches)
 2. Added weight, imported from NSM of original model. The "added weight" on the options tab is included in the NSM for the PSHELL.

I hope this is helpful.

-James
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Miscellaneous Software Topics / Mass Discrepancies
« Last post by James.rogers@nasa.gov on July 19, 2019, 02:39:06 PM »
When sizing components with the "Hat Bonded" concept, there is a discrepancy between the mass of the component displayed within Hypersizer and the bdf/f06 files created when using the "Update Nastran" button. With each iteration performed, the component mass within the updated bdf/f06 is further increased by the original amount of mass for the given component.

I have not encountered this issue with the "One Stack Unstiffened" or the "Honeycomb Sandwich" concepts.
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General Discussion / Re: OrthoGrid Sandwich - can you provide a description?
« Last post by cpoteet on July 19, 2019, 12:37:49 PM »
Thanks James.  The graphic is misleading for this concept.  My initial interpretation was correct, but when I saw the graphic I thought it must be something else.
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General Discussion / Re: OrthoGrid Sandwich - can you provide a description?
« Last post by James on July 19, 2019, 12:15:30 PM »
The orthogrid sandwich concept is basically an orthogrid panel with two facesheets (top and bottom) such that the internal ribs are the middle layer, sandwiched between the facesheets.

Here is a help page that shows the available sizing variables for the grid concepts. Orthogrid sandwich is included.
http://hypersizer.com/help_7.3/#Concepts/fam-04-grid.php

I hope this is helpful. Let me know if you have any further questions.

-James
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General Discussion / OrthoGrid Sandwich - can you provide a description?
« Last post by cpoteet on July 19, 2019, 10:48:51 AM »
Hi All, I was looking through the hypersizer concepts and found something named "OrthoGrid Sandwich" under the Orthogrid/Isogrid family.  It wasn't clear from the inputs exactly what this concept represents, can someone provide more info or a diagram?  Thanks, Carl
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Miscellaneous Software Topics / Re: Assembly Project Feature Issues
« Last post by Stephen on July 19, 2019, 08:26:34 AM »
For reference, the issue being encountered here was because when creating new part databases with the updated FEM results imported, the user was choosing identical names for each project.

When importing a project, HyperSizer creates temporary files based on project name that contain (among other things) a version of the FEA forces. If another project is made with the same name, the software will think that the forces have already been imported because it will find the previous version's files.

The solution to prevent this from reoccurring is to either delete these temporary files before creating new databases (located in C:\HyperSizer Data\Temp or D:\HyperSizer Data\Temp), or give the next iteration's projects different names from the first.
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Scripting / Re: Auto-Calculating Buckling Spans
« Last post by behrendmp on July 09, 2019, 03:15:06 PM »
Thanks for the quick response and your helpful suggestion. Doing the dummy project import sounds like a reasonable work around. Much appreciated.

- Mike
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Miscellaneous Software Topics / Re: Assembly Project Feature Issues
« Last post by Stephen on July 09, 2019, 02:48:08 PM »
James,

I am reaching out via email for more information.

Thanks,
Stephen
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