Modal/seismic analysis problem:missing eigenvalues

[Anonymous]

Hi,

First of all I apologize if this problem has bein postet before, but I could not find a result for it.

I am trying to do a modal analysis on my Bachelor's project, on which I want the results only on X&Y;

after setting everithing, I runnedd the calculations in order to see in which mode participates the most mass, and I encounter this error:

Number of missing eigenvalues found = 2

the error repeats itself in several cases before the calculations are done.

I do not know how to solve it, and I think I did the steps for modal analysis wright.

Any help or suggestions would be greatly appreciated.

With regards,

Dan,Suciu

[Rafal.Gaweda · Accepted solution]

Sturm Check procedure finds missing eigenvalues.

If you do not want it to be done - turn off Sturm Check in Modal analysis.

[Anonymous]

Sturm Check and an incresead number of iterations and mods did it

Thank you