Hello,

I wanted to make a frequency analysis with freecad and calculix. First I made 5 cubes and then with "make compound" command I created one part.

After this in FEM workbench I defined the materials - shorter sections 15CrNi6, the longer sections AlZn4 (the aim was to take mass points on a beam).

Then I gave a force and a constrain to the beam.

Meshed it and tried to run calculix but it says the next error everytime. I tried it already with part unite (fusion) but the resolution was the same.

So, my question is, what do I have to chance in this process to get the results?

And thank you, in advance, for your help/answer!