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Frequency Response in FSI
Posted May 23, 2011, 12:19 a.m. EDT Structural Mechanics Version 4.0a 2 Replies
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Hello,
I would like to obtain the frequency response of a damped cantilever. I can do this in the solid mechanics interface simply by putting an arbitrary, stationary load on the free end of the cantilever, doing a frequency domain study, and plotting "solid.uAmpZ" (oscillations in z direction only) for a point on the free end. When I attempt to do the exact same thing except only using FSI (plotting "fsi.uAmpZ"), I get zero amplitude all around! Is there a reason for this, or have I just made a mistake? Any help is appreciated.
Dara
I would like to obtain the frequency response of a damped cantilever. I can do this in the solid mechanics interface simply by putting an arbitrary, stationary load on the free end of the cantilever, doing a frequency domain study, and plotting "solid.uAmpZ" (oscillations in z direction only) for a point on the free end. When I attempt to do the exact same thing except only using FSI (plotting "fsi.uAmpZ"), I get zero amplitude all around! Is there a reason for this, or have I just made a mistake? Any help is appreciated.
Dara
2 Replies Last Post May 25, 2011, 9:46 a.m. EDT
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Posted:
1 decade ago
Hello,
I have exactly the same problem. But if i do the study in time-dependant the coupling works. It doesn't work in frequency domaine. It's about 2 weeks i'm working on it but no results.
Tiger
I have exactly the same problem. But if i do the study in time-dependant the coupling works. It doesn't work in frequency domaine. It's about 2 weeks i'm working on it but no results.
Tiger
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Posted:
1 decade ago
Hi
from what I understand the FSI is not st up with harmonic development so you cannot do a frequency domain analysis without writing fully out the equations yourself. but I believe the acoustic module do have the required pre-cooked physics (but i do not have that module ;) so I cannot give any further advises
--
Good luck
Ivar
from what I understand the FSI is not st up with harmonic development so you cannot do a frequency domain analysis without writing fully out the equations yourself. but I believe the acoustic module do have the required pre-cooked physics (but i do not have that module ;) so I cannot give any further advises
--
Good luck
Ivar