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how to define damping
Posted Jul 4, 2010, 7:02 a.m. EDT 1 Reply
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hey
i'm simulating a folded beam spring in the mems module.
i wish to plot it's frequency response "max. displacement vs. frequency"
I performed modal analysis and found out that the resonance frequency is around = 900HZ
HOWERVER, when performing frequency response i get a constant displacement as frequency varies and i don't know why
I think that i have problems with damping ,please i want to know a detailed steps to introduce damping into my model
i'm simulating a folded beam spring in the mems module.
i wish to plot it's frequency response "max. displacement vs. frequency"
I performed modal analysis and found out that the resonance frequency is around = 900HZ
HOWERVER, when performing frequency response i get a constant displacement as frequency varies and i don't know why
I think that i have problems with damping ,please i want to know a detailed steps to introduce damping into my model
1 Reply Last Post Jul 5, 2010, 1:34 a.m. EDT
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Posted:
1 decade ago
Hi
there are a few pages on damping in structural, and also an example of a matlab file how to optimise your damping for a freequency domain, check the doc.
Frequency responses and absolute amplitudes are a delicate issue, also to get the right units/scaling when you have a PSD defined acceleration spectra.
Good luck
ivar
there are a few pages on damping in structural, and also an example of a matlab file how to optimise your damping for a freequency domain, check the doc.
Frequency responses and absolute amplitudes are a delicate issue, also to get the right units/scaling when you have a PSD defined acceleration spectra.
Good luck
ivar