PSD analysis

[Ravindra Gouda]

Hello,

I am working on random vibration - PSD analysis of a decklid assembly model using LS-DYNA.

I have to define the PSD amplitude  (m/s2 n) vs frequency (hz) in all x, y & z directions.

How to define the Accelerance (acceleration/force), does it VAFLAG=1 along with LDPSD?

I was able to find the keyword *Frequency_Domain_Random_Vibration to define PSD amplitude, LDPSD and dof. 

Could you please provide any relevant case studies related to random vibration analysis -PSD amplitude  (m/s2 n) vs frequency (hz) for decklid/bonnet assembly or any.

Thank you,

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 Regards,

 Ravindra