Calculation Speed Volume Model RFEM6

Good day,

I have now managed to get my calculation running and would like to use the add-on Structural Stability to calculate the maximum permissible load for the system. I have watched the tutorial for this and have also made the settings accordingly. Now I have the problem that the calculation takes an extremely long time: it has been running for 18 hours and there is no end in sight. The CPU and memory should actually be sufficiently dimensioned and are only being used to a small extent.
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What can I do or which settings can I adjust to speed up the incremental analysis process?
Flächenkontakt_0.01.rf6 (1.3 MB)

Thank you very much and best regards
Baustudi

Hello Baustudi,

I am currently trying to reproduce the problem on a tech computer. The calculation is still running.

But one thing caught my attention. The deformation of load case 1 is over 1 m.

grafik

Is that really a realistic expected deformation?

If so, then it is no longer appropriate to calculate geometrically linear. It would then have to be calculated geometrically nonlinear with large rotations.

Best regards
Frank

So, now the cause seems to be clear. Load cases 1 and 2 did not converge. The model is apparently unstable. The load increase leads to ever larger deformations and does not find an end.

First, try to stabilize load case 1. In this FAQ you will find some helpful tips for this:

If the load case is stable, then test whether the static analysis of load combination 1 converges. If all that works, then you can proceed to the stability analysis of load combination 1.

Best regards
Frank

1 Like

Hello Frank,

thank you very much for your help! I will take a closer look at Load Case 1 again.

Best regards
Baustudi