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Frequency domain - mechanical

Topics: 4.0

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Mir

Mir

April 15, 2012 9:21am UTC

Frequency domain - mechanical

Hi,
I am an electronics student and am trying to simulate the mechanics of a square plate.
My plate has the 4 side faces fixed and a uniform distributed load on one of the larger faces.
The stress and displacement are close to calculated values - hence I can justify that my understanding is verified by the simulation.
I tried to find the eigen frequencies. My query - is the solution given by comsol for eigen frequency = omega (= 2.pi.f) or is it = "f"?
I tried the frequency domain simulation. Here, the frequency that I enter are omega (= 2.pi.f) or is it "f"?

Please recommend me books where, from formulae, I can calculate the resonant frequency and compare with the simulated results. I tried Timoshenko - strength of materials -2, but did not get the frequency.

Thanks in advance.

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Ivar Kjelberg

Ivar Kjelberg

April 16, 2012 6:11am UTC in response to Mir

Re: Frequency domain - mechanical

Hi

eifgenfrequency is in Hz or "f" eigenvalue in omega or rad/s. A frequency domain solving you should give the frequency in Hz. Check the model library and do some of the exercices therein (do not forget to update your model library first)

PS: try to get a newer version, 4.0 was a "first out" of an important change in the software, it was not very stable

--
Good luck
Ivar

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