Frequency Response Function using SPCD

Altair Forum User

Hello,

 

I am trying to do a frequency response analysis on a structure.  it's a tall cylinder with a fixed base.  I am applying a unit acceleration via SPCD that is also at the base of the cylinder (same nodes as where i have the SPC).  The displacement analysis shows that the entire structure is moving as opposed to swaying back and forth (like a building in an earthquake).  

 

I'm wondering if this is correct or if i am missing something.  I've attached the model below. 

Unable to find an attachment - read this blog

Altair Forum User

Hi,

From the animation the results make sense. If you are still confused, you can use tracing option.