Learning Forum

[Erik Kostson]

So first define a frequency dependent table for the stiffness called say k_freq using *dim that holds the stiffness values as function of freq.

Define the combin14 using ET command

Assign real constants for stiffness using the table k_freq as:

R,100,1,%k_freq%

or if in mechanical in the command snippet below a spring object (under connections/spring)

RMODIF,_sid,1,%k_freq%
Please see the *DIM. R, RMODIF, and ET commands for more info.
ALso have in mind that this can only be used with a full harmonic response.

All the best
Erik