Static acceleration plus vibration

[mathlete7]

Hello,
I have a problem in which an electronics box mounted on a surface is exposed to a large static acceleration at the same time as a random vibration environment. So essentially the maximum acceleration at the mounting location is the static acceleration plus the 3-sigma acceleration (3Grms) due to the vibration. For instance, if my static acceleration was 10 Gs, and my Grms level is 5 Grms, this gives me a maximum acceleration at the mounting location of 10 Gs + 3*5 Gs = 25 Gs.
Does anyone have any idea how I could qualify hardware to an environment like this? I could put the hardware in a centrifuge, which would give me my net acceleration of 25 Gs, but I wouldn't get the dynamic response for the components inside the box. Similarly, I could just vibe it and get the dynamic response, but I wouldn't have the 10 G static acceleration superimposed like I have in reality.

Any ideas?

Thanks...

 

[floattuber]

I'm no expert in the project/stress analysis side of things, but I don't think you would qualify it under both conditions simultaneously.

Vibration testing is normally an accelerated lifetime test and sustained acceleration is not. Presumably, your electronic box does not see the static acceleration continuously during the course of it's life (when operating).

Usually vibration levels are higher than what the component will normally see so that the duration of the test can be shortened to days instead of months or years of service.