# Calculating shock absorption

Hello!

I’ve recently become very interested in Sorbothane as a shock absorbing material, with the purpose of protecting sensitive equipment of mine from drops. My background on physics is limited and I would really appreciate any help, especially since Sorbothane can be costly and I’m a little reluctant about making the investment without having a sense of how useful the material will actually be.

Sorbothane has a “Design guide” http://www.sorbothane.com/Sorbothane-Design-Guide101409.pdf" [Broken], which may be used to calculate shock absorption, and which I’m having trouble putting together. The equipment I’d like to protect weights about 15 lbs, and I’d like to test dropping it at about 10 ft. The case I’ll be dropping has a “worst drop angle” where the surface impact would be 5” x 2”.

My questions are: based on that surface area, weight of the case, and drop height, what thickness of Sorbothane would I need to reasonably protect the material, and at what durometer? Would it make a difference if smaller pads are used together in that area compared to a larger rectangular one? And finally, does anyone know of a similar or better material I can use to cushion a drop and absorb shock?

Any input will be much, MUCH appreciated! Thank you if you’ve read thus far.

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