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Applying a frequency dependent load for steady state dynamics

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boek

Mechanical
Joined
Apr 11, 2022
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11
Location
SE
I am trying to apply two loads which are frequency dependent in a steady state analysis. The forces are caused by a rotating unbalance:

Fx=m ω2e sin(ωt),
Fy=m ω2e 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?

 
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.
 
I want to include ω in P_mag(ω) = m ω2e. Can I do this without using the amplitude feature?
 
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