I’m seeing very high natural vibrations for a model in Karamba and I’m hoping that someone can please help me understand why they are so large. I have a 40-story tower that I have modeled in both SAP2000 and Karamba. The fundamental period for this tower in SAP2000 is around 4 to 5 seconds (ballpark), which is around what I’d expect. The fundamental period in Karamba is more than 70 seconds (see below).
Since the output frequency is in hertz I’m just taking the inverse value to get the period.
Is there something obvious that I’m missing?
I’m attaching my script.
JaredTowerVibes.gh (42.3 KB)