Hi Thomas, General/motivation ; there are quite a few practical and interesting engineering problems that are hard to do or even impossible with the current FreeCAD/Calculix combination and I don’t think adding more external solvers or waiting for their developer(s) is the answer. For example: mixe...

Interessante Geometrie.
Das 3D-Modell dürfte etwas aufwändiger werden...

Harry, give us a break.
Can you explain what you are doing?
No math, just words..

To the moderators: We have the cfdof/cfd-subforum of FEM. OK. Can we add a new subforum for sph-method (particle-method)? And move the existing stuff into it? https://forum.freecadweb.org/viewtopic.php?f=37&t=20595 Have a look at the dualsphysics forum: https://dual.sphysics.org/vanilla/ In my opini...

I unrefined your model, maybe this helps... mesh-refinement:
mesh body
click on mesh in tree, select mesh refinement,
then select the lines you want to refine.

ah, ok.
But that means, that only a part of the whole structure is of interest.
Is there horizontal loading at the plate (especially perpendicular to plate)?
Before meshing: eliminate the bolts and some holes...
Use mesh refinement at the cracking zones.

or the good old fashioned way "by hand"...
https://structx.com/frames.html

Hi cti2019, I had a look at your model. Running a 3D-FEM analysis is an overkill of work and not necessary. It is much easier to use a frame program for such a problem http://members.ziggo.nl/wolsink/ https://www.ftool.com.br/Ftool/ Your load case uses only vertical loading near by the knots of the ...

You have n eigenmodes with with deflection.
The Eigenmode with the most deflection is scaled to 1.
The rest is (should be) lower. That is the spectrum.
Yes, the results should be scaled to the eigenmode with
max deformation.

meme2704 wrote: ↑

Fri Feb 08, 2019 4:19 pm

I would have preferred that your plane do not have a swastika on the tail ......

Why not? Thats history.
Some people think this is the future:
https://www.youtube.com/watch?v=zohFbaOdZrA
Crazy stuff, isnt it?
There is nothing new under the sun...
regards Thomas