topic Re: Modal analysis results N/A in Robot Structural Analysis Forum

Modal analysis results N/A

Anonymous — Thu, 07 Apr 2016 15:46:19 GMT

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 — Thu, 07 Apr 2016 16:24:17 GMT

Can you attach your model?

Regards,

Anonymous — Thu, 07 Apr 2016 16:40:51 GMT

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

Artur.Kosakowski — Fri, 08 Apr 2016 06:26:30 GMT

Is it the same after you press the Accept button?

Anonymous — Fri, 08 Apr 2016 07:50:03 GMT

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

thanks for your time.