I need a formula to calculate the PSI (p) applied to a sample A = L*W that is struck by a moving platen of X weight and V volcity (and/or free fall drop height). This is for a cushioning curve test series on our new testing equipment. Below are the formulas supplied.

Equate an impact velocity to a free fall drop height or
vice versa as follows:
h 5 Vi
2/2 g ~solving for free fall drop height! (2)
Vi 5=2 gh ~solving for impact velocity!
where:
h = free fall drop height, in. (m),
Vi = measured impact velocity, in./s (m/s), and
g = acceleration due to gravity, 386 in./s2(9.8 m/s2).

Question

I need a formula to calculate the PSI (p) applied to a sample A = L*W that is struck by a moving platen of X weight and V volcity (and/or free fall drop height).  This is for a cushioning curve test series on our new testing equipment. Below are the formulas supplied.

 Equate an impact velocity to a free fall drop height or
vice versa as follows:
h 5 Vi
2/2 g ~solving for free fall drop height! (2)
Vi 5=2 gh ~solving for impact velocity!
where:
h = free fall drop height, in. (m),
Vi = measured impact velocity, in./s (m/s), and
g = acceleration due to gravity, 386 in./s2(9.8 m/s2).

anonymous · Answer

Just to clarify, this is for determining the correct drop height and static load to use on a Materials testing machine.