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02-14-2017 05:58 AM

Hi

Is there a way to run a modal analysis computing just eigenfrequencies with an associated mass fraction over a certain %? The aim is to safe computational time.

Thanks,

Paco

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02-14-2017 08:06 AM

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02-15-2017 11:39 AM

Hello!,

In Real Eigenvalue Analysis (SOL103) you can use the **MEFFMASS case control command** to control the amount of modal content that is calculated. To do so, specify values for the MINT1, MINT2, and MINT3 describers (read the QRF for more info). NX NASTRAN solver continues to calculate modes until the total effective mass fractions in the translational X-, Y-, and Z-directions exceed the values you specify for the MINT1, MINT2, and MINT3 describers, respectively.

Best regards,

Blas.

Blas Molero Hidalgo, Ingeniero Industrial, Director

IBERISA • 48004 BILBAO (SPAIN)

WEB: http://www.iberisa.com

Blog Femap-NX Nastran: http://iberisa.wordpress.com/

IBERISA • 48004 BILBAO (SPAIN)

WEB: http://www.iberisa.com

Blog Femap-NX Nastran: http://iberisa.wordpress.com/

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