Fourier Transformation in Nastran
Fourier Transformation in Nastran
(OP)
Who can guide me through a Fourier Transformation in Patran/Nastran? To run a modal transient analysis I need to know which modes are dominantly participating.
Thank you.
Thank you.





RE: Fourier Transformation in Nastran
You should probably include enough modes in the modal transient analysis to account for, say, at least 90% of the mass.
Also, consider the frequency content of the excitation function with respect to the modal frequencies.
Tom Irvine
www.vibrationdata.com
RE: Fourier Transformation in Nastran
Does anyone knows about the use of orthotropic material in/for FEA in Generative structural analysis CatiaV5... It looks like Catia is allergic to orthotropic material data...