Applying a frequency dependent load for steady state dynamics

[boek]

I am trying to apply two loads which are frequency dependent in a steady state analysis. The forces are caused by a rotating unbalance:

F[sub]x[/sub]=m ω[sup]2[/sup]e sin(ωt),
F[sub]y[/sub]=m ω[sup]2[/sup]e cos(ωt),

where, m is a mass, e the radius, t is time, and ω is the angular velocity. Is there a simple way to do this in ABAQUS?

 

[FEA way]

In SSD analyses loads are applied as harmonic: P(t)=P_mag*sin(ωt+θ) where P_mag is the magnitude that you can control. So they vary sinusoidally with time over a given range of frequencies. They can be specified in terms of their real (in-phase) and imaginary (out-of-phase) components. You can also use the amplitude feature to define frequency-dependent loading.

 

[boek]

I want to include ω in P_mag(ω) = m ω[sup]2[/sup]e. Can I do this without using the amplitude feature?