Frequency Response Function using SPCD

User: "Altair Forum User"
Altair Employee
Updated by 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. 

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