*ERROR in d[n,s]aupd: info=-3

disladisla
Hi,

I'm getting this error when trying to compute more than six vibration modes with ccx. The internal solver works fine up to the 10 modes and give the expected values, but CalculiX is failing with this message:

*ERROR in d[n,s]aupd: info=-3 # of converged eigenvalues=0

I’m using MECWAY 14 , Calculix version 2.19 with One API 2022.0.3 files

I take the opportunity to consult which is the most stable and reliable version of ccx for windows and where could I download it?

Thanks

Comments

  • VictorVictor
    The eigenvalue solver CCX uses (ARPACK) can't find the highest couple of modes. In this case, it looks like there are only 10 modes in total, so you may have to add some dummy elements with higher frequency modes to occupy the top of the range.
  • disladisla
    It worked!

    Thanks
  • prop_designprop_design
    If you add SOLVER=PARDISO, it will use the pardiso solver.
  • VictorVictor
    ARPACK works together with PARDISO rather than as an alternative, so I don't think you can get around it that way.
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