Perform modal analysis for a range of frequencies
Perform modal analysis for a range of frequencies
(OP)
Dear all,
Is there an option in NX Nastran to perform a modal analysis (SEModes 103) for a range of frequencies?
I guess the standard setting is to calculate the first 10 modal frequencies.
In my case, I am analyzing a certain plate for which the fist 6 modal frequencies are calculated to be in the order of 1e-4 Hz, which is not interesting.
Thanks in advance, regards,
Maarten
Is there an option in NX Nastran to perform a modal analysis (SEModes 103) for a range of frequencies?
I guess the standard setting is to calculate the first 10 modal frequencies.
In my case, I am analyzing a certain plate for which the fist 6 modal frequencies are calculated to be in the order of 1e-4 Hz, which is not interesting.
Thanks in advance, regards,
Maarten





RE: Perform modal analysis for a range of frequencies
RE: Perform modal analysis for a range of frequencies
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BEGIN BULK
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$* SOLUTION CARDS
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EIGRL 100 10
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This value "10" represents the number of calculated eigenmodes.
In short; I was able to increase the number of calculated eigenmodes, rather than providing a frequency range.
My problem is soved by this. Thank you!
What represents the value "100"? I played with it, but could found out its meaning.
RE: Perform modal analysis for a range of frequencies
SOL 103
CEND
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METHOD=100
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BEGIN BULK
EIGRL,100,,,10.
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ENDDATA