Calculating drop test height from a g-shock value 1

[deangardner]

I have currently had some small parts fail during a vibration test and it's more than likely that the shock part of the test that made it fail.

I've come up with some new ways to protect this part, but testing these methods will be very costly. Therefore to mitigate this risk i want to devise a drop test that will mimic the shock loadings seen during the vibration test.

I know that the max shock during the test is 50g for 10ms and the weight of the object is 0.05 Kg. Now all i need is a height, but the more i look into it the more it starts to look like einsteins style of work!

Has anybody ever come accross this type of rough and ready approach before and derived a simple formula for working out a drop height in meters?

 

[EkOnkaar]

The probem I have is not as simple. My object costs $30k, and is 170 lbs ! I have to be quite close to the number before I subject this to a shock test, which is 30g for 10 ms.. That's why I needed some way to determine the drop height as an equivalent.

 

[IRstuff]

OK, you're not the same guy. You should RF your posts and start your own. In this case, you already have the requirement, which the test facility can program for you. The shock requirement cannot be easily duplicated with a drop test.

TTFN

FAQ731-376