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  1. filipadamek

    Siemens NX Nastran - Random analysis (PSD curve)

    I use SOL111. I can post here the input *dat file after weekend... First time I have used: tonnes,mm, unit loading SPCD = 9810 mm/s^2, PSD in G^2/Hz => but I got very small RMS stress (something like 0.0001... MPa). Then I've tried: tonnes,mm, unit loading SPCD = 1 mm/s^2, PSD in (mm/s^2)^2/Hz...
  2. filipadamek

    Siemens NX Nastran - Random analysis (PSD curve)

    Hi all, I would like to ask something about random analysis. I´m solving a random analysis problem in NX Nastran. It's going about PSD units. I went through these posts: http://www.eng-tips.com/viewthread.cfm?qid=365454 http://www.eng-tips.com/viewthread.cfm?qid=345410...

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