Transient Response Analysis- SPCD

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

Hi,

 

I am doing a direct transient analysis.  My goal is to apply a base excitation in the form on an SPCD card at a frequency of 3 Hz for a time range of 1 second, and then view the response of the structure for the next 5 seconds.   

 

Things that are going wrong are:

Is if you are in transient animation mode, and have the results set to displacement, the displacement of the structure seems to increase as time goes on. (it seems as in the TABLED1, x is a time value, and y is a displacement value).  How do i get it to apply a base excitation frequency?

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