Vibrational/Acoustic Loading Spacecraft

[Milan Baars]

Hi guys,

I got the following question. I am designing a spacecraft for a mercury mission, my task in the process is designing the structure of the spacecraft . I'm in the desining process but struggeling with the effects of the vibrational loads during launch. I've analysed the (quasi)static loading and the pressure loading but now I'm looking for a way how to translate the (random)-vibrations into accelerations/loads experiences by the spacecraft . First I was trying via Accelerational Spectral Density but unfortunately these data are not available for the Delta-IV launcher, which I'm designing for. The data I have are decibel by frequency graphs but I'm struggling with finding a way to translate this information to useable loads/accelerations.

Can someone point me in the right direction?

Thanks in advance,

 

[Greg Bernhardt]

Thanks for the post! Sorry you aren't generating responses at the moment. Do you have any further information, come to any new conclusions or is it possible to reword the post?

 

[NumericalFEA]

Sounds like a big and pretty complex research project by itself. A drawing with some explanations would be helpful.