Calculix User Element (Uxxxx)

[Dom]

Hello,

I’m trying to write a subroutine in Calculix in order to implement a beam elements formulation with a general section (Euler- Bernoulli beam). I need it doing a dynamic analysis.
I have tried to follow the procedure described in CCX manual.
I have written and modified the subroutines:

• e_c3d_ubml.f

• resultsmech_ubml.f

• extrapolate_ubml.f

• e_c3d_u.f

• resultsmech_u.f

• extrapolate_u.f

The eigenvalues that it calculates out are wrong (I'm using Nastran to compare) and the results aren’t in FRD file (in attach there is the model I’m using to check).

I have many difficulties debugging because I don't know the “structure” of the program. For example, I don't know who calls the subroutine e_c3d_u.f?

Has anyone tried to write a subroutine for Calculix?

Is there any document describing the "architecture" of the program?

I'm compiling the program on Linux.

Thanks in advance
Dom

[bernd]

you should write to the CalculiX mailing list. There are a lot of people around including Guido Dhondt the main author of the software. See https://groups.yahoo.com/neo/groups/calculix/info

BTW a real beam would be awesome, keep us informed !

[Dom]

Thanks, Bernd

Just done!

Anyway if in this forum someone has answers, let me know, please.

[Kunda1]

Just done!

Is the mailing list archived? Can you post a link to your question for us to track?

[bernd]

you need to log in for the archive to read.

[UR_]

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AFAIK, successor should be found here: https://groups.google.com/forum/#!forum/calculix
but seems to be still empty

[Dom]

I sent an email to calculix@yahoogroups.com, writing my questions.
I hope someone answers me.