Disturbing Frequency...Help ...Mil-std-810 516.5 Ground equipment shock

[Rem.Hassouneh]

Hi,
Thank you for your upcoming help ^.^

I am working on electronic enclusore and it should servive in Mil-std-810 516.5 Ground equipment shock.
to select the right isolater ((Disturbing Frequency)) should be known.

Is there any recommended (Disturbing Frequency) could be found related to (Mil-std-810 516.5 Ground equipment).

Regards,

 

[IRstuff]

A shock is not a single frequency; what exactly are you looking for?

How is this different that your other, related, question? An 11-ms 40-g sawtooth is already specified by your referenced table 516.5-II

TTFN (ta ta for now)
I can do absolutely anything. I'm an expert!

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[Rem.Hassouneh]

I want to know how to find the total energy in this shock pulse?
can i calculate it like this:
V=0.5 * 11ms * 40g * 9.81
Then Kinetic energy in the pulse = 0.5 * V'2 * mass ??

 

[Rem.Hassouneh]

please check my procedure about shock.
By mentioned table I have the peak acceleration (P=40g) and the nominal time (T=11ms).
now I did:
calculate the velocity of the pulse V=0.5TP.
-we have the total Mass (m)
k(Spring coefficient)=(v'2 * mass)/(e'2 * D'2(maximum displacement))
so we have k and D.