FRF analysis not producing results

[GGB.BHB]

Hi

I think I am having a similar issue to the one called 'FRF doesn't show velocities or accelerations' (tried to add link but I couldn't get it to paste here)

I have set up a FRF case in Robot 2020 and run it.  When I do it without damping I get spikes at the natural frequencies but when I run with the actual 2% damping I get no results.  How do I resolve this?

Also why does the FRF case not come up in the load to mass conversion so that you can choose what mass should be applied for this analysis case?  It also has no options to choose the way the modal analysis used to generate the FRF is carried out incl. what degrees of freedom are included e.g. Z axis only.  Why is this? 

Many thanks

[Krzysztof_Wasik]

Hi @GGB.BHB 

Could you share file for verification. Save it without result then zip. It should be small enough to attach to forum post

Regarding masses.

FRF takes setting from modal analysis case predicting FRF case. So if you define mass conversion for modal case FRF will recognize it

[GGB.BHB]

Here is the file @Krzysztof_Wasik 

[Krzysztof_Wasik]

Hi @GGB.BHB 

You have not defined any loads  for FRF load case. Loads are defined for cases 1 and 3 only