Modal analysis determine frequencies above first 1000 modes

[corne_mo]

Dear,

I am performing a modal analysis to determine the eigen frequencies of the structure. I am interested in higher frequences because of the rotating equipment which is mounted to the structure. However it seems Robot can only calculate the first 1000 modes. If I enter a value > 1000 in de modes input box, the field turns red. The frequencies I am interested in are partly higher than the frequencies of the first 1000 modes. Is there a way to calculate more modes, or to calculate for example frequencies in a specific range only?

Thanks in advance for your replies.

[Krzysztof_Wasik]

Hi @corne_mo 

Red color is rather warning than limitation.

I was able to calculate 1100 modes for my test model despite of this warning