Altair 2025 Student Edition Shape Optimization results not showing shape change

FedericoVenturi

Hello all,

I am currently using the Student Edition Altair Hypermesh 2025's Shape Optimization through Optistruct. The model is setup and runs, returns results as expected, shows that there are changes to the shape, however, when I open the results file in HyperView, I don't see any visual change to the shape between iteration 0 and the last iteration, or any iteration for that matter. I have attached three pictures showing the results with the first and last iteration, showing no difference, as well as another showing the shape variables at the last iteration in the .out file, showing that they have changed. Additionally, I am attaching my .fem file, in case this is useful.

I have had this happen before, so I uninstalled Hyperworks 2023 entirely to do a fresh install, this time with Hypermesh 2025. This did fix it, but now, using the same models, it suddenly no longer shows the change in shape again as before. Please let me know what more information I can provide to help fix this issue, and any information is greatly appreciated. Thank you!

ShapeVariables.png

Iter5.png

iter0.png

porosity_V4_90.fem

Adriano_Koga

for optimization there are a few h3d files generated.

The one containing shape changes is the *_des.h3d file.

The others _s1.h3d, _s2.h3d, are related to each loadcase of your model, and by default they do not store the shape change.

In your case, run your model, again, but adding a card SHAPE, requesting format H3D, just like step 3.6 in this tutorial.

https://2021.help.altair.com/2021/hwsolvers/os/topics/solvers/os/2d_shape_optimization_cantilever_beam_r.htm#Z_2d_shape_optimization_cantilever_beam_r

This will force OS to wirte the shape variation into all the other files.