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twinky64
12-02-2010, 07:17 PM
Hey everybody, I'm new here. If there is a thread that can answer all of my questions, please provide me with a link. Thank you.

I'm using honeycomb aluminum impregnated with polyethaline foam (expanding foam). I'd like to do some analysis but unfortunately, I do not have a high speed camera nor an accelerometer. What I do have is a quasi-static crush machine capable of 200,000 pounds. It graphs deflection vs kips. However, how can you find average deceleration and peak deceleration from a slow crush? Also, how can you find the energy absorbed?

Thanks again.

twinky64
12-02-2010, 07:17 PM
Hey everybody, I'm new here. If there is a thread that can answer all of my questions, please provide me with a link. Thank you.

I'm using honeycomb aluminum impregnated with polyethaline foam (expanding foam). I'd like to do some analysis but unfortunately, I do not have a high speed camera nor an accelerometer. What I do have is a quasi-static crush machine capable of 200,000 pounds. It graphs deflection vs kips. However, how can you find average deceleration and peak deceleration from a slow crush? Also, how can you find the energy absorbed?

Thanks again.

Tom W
12-02-2010, 09:08 PM
1. This has been discussed numerous times before so I'm sure a search would quickly find the answer.

2. Posting a link will take ages, I've posted a couple of times in threads that will give you the answer so looking through my posts would be a pretty quick way to find the answer.

3. Just because I'm feeling generous the answer is f=ma where m is defined in the rules as 300 kg.