shock response as random vibration 1

[mwnuk]

Hello to everyone

I participate ESEO project. I task is carbon fiber mounting of antena. I did analysis to cover requirements, but i got a problem with SRS analysis. For FEM calculations I use NX, where I can find maximum ply failure for random events, but I need Power Spectral Density curve. How can I convert data from SRS which is generally acceleration to frequecny function to PSD curve?

If it is hard or not possible, do you know software, where I can check max ply failures for shok response analysis?

regards
Maciek

 

[GregLocock]

I suggest you read the tutorials at

http://www.vibrationdata.com

Cheers

Greg Locock


New here? Try reading these, they might help FAQ731-376

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[mwnuk]

Thank You very much.

 

[jimkinney]

You can't readily go from SRS to PSD. You can reverse Miles' equation, but there are limitations on the shape of the PSD.

The easiest method might be to synthesize a PSD, convert it to a Vibration Response Spectra (VRS) and compare it to your SRS. This would be an iterative process, and steps are available in detail from VibrationData as mentioned above.

Good luck.

Jim



Jim Kinney
Kennedy Space Center, FL