OpenVSP 3.50.1 - 'Apply Loads' results in 0 DLOADS

[Zak Conte]

Hello everyone,

I am currently trying to use the OpenVSP Structures - pyNastran - Mystran workflow which Bryan Sandoz demonstrated in the 2025 OpenVSP workshop to analyze the deflection on my aircrafts wing, named MainWing.

I have implemented ribs and spars, alongside setting material properties and BC's. I have also added my wing's structure to an assembly, and meshed and exported that before pressing 'Apply Loads'. I also run a VSPAero prior to pressing 'Apply Loads'

My issue starts when I press 'Apply Loads' in the Aero Structural tab. After waiting for the loads to transfer over, I open the .static.inp file, however all DLOADS at every node remain 0.

My apologies if this question has been posted before, however I would like to ask if there is anything I am missing which is causing my loads to not transfer over. Thank you in advance for any help with this situation.

[Zak Conte]

Hello again,

Attempting this workflow again using OpenVSP 3.43.1, the version used by Bryan Sandoz in his demonstration, resulted in loads being properly applied to the .static.inp file.

I have not yet tried versions between 3.50.1 and 3.43.1, but my current suspicion is there was some change to the .adb format which causes the parser in src/vsp_aero/Adb2Load to no longer work.

Here is the file I was using, this one was tried on both 3.50.1 and 3.43.1, if it helps

[Rob McDonald]

That is likely the case.  I'll try to look into it.

Would you mind adding an issue report to GitHub so I can track it there?

Rob

[Zak Conte]

Hello Rob,

Thank you for the response, I have added a new issue report to the GitHub.

Zak Conte