Modal analysis results N/A

[Anonymous]

Hi,

I want to determine the natural frequency of my structure.

I have a load case with the software generating the self weight and case 2 is additional dead load that I have converted to global mass.

The results give me mode 1, then the higher modes are shown as N/A and as SRSS, CQC etc.

What am I missing?

I remember doing exactly the same in a previous revision of the same model and things were working just fine... :s

[Pawel.Pulak]

Can you attach your model?

Regards,

[Anonymous]

Sorry, I don't have permission to do that.

[Artur.Kosakowski]

Is it the same after you press the Accept button?

[Anonymous · Accepted solution]

No that didn't help but deleting the modal case and creating a new one seemed to have worked.

thanks for your time.