I am designing a helmet impact machine. Does the accelerometer placed inside helmet and load cell placed under anvil give the same peak force value?
If the design is accurate, yes, that is, the accelerometer position would be sufficient for the emergence of an energy conservation law.
Your machine is very similar to two billiard balls, with a piece of sponge between the two balls. The force applied to the sponge and one ball from the side of the other ball is equal if and only if the elastic coefficient of ball and sponge is equal. Otherwise, one-shot is found in the ball and the other in the sponge.
in your machine elastic coefficient is so important.
Hassan, its a bit more complicated than that. Because, the accelerometer measures acceleration (in meters per second squared), whilst the load cell measures the force in N (kg.m.s^-2).
Of course the force (which the load cell will measure) of the impact will cause an acceleration on both bodies. But whilst the force is equal and opposite, the acceleration won’t be. Even more issues arise if the helpmeet deforms irreversibly to absorb the impact - which I guess is the idea of it. I would both sensors....
- Badges
- Science topic
- Similar topics
- Physical Sciences
- Mechanics