Acceleration calculations

[Parsnip]

I am having to write a justification as too why an assembly doesn't have to undergo an acceleration test. Basically I have a spring in a piston that is held in compression by a weight. Once the weight is removed, the spring forces four flukes out to an angle of 45 deg from a cylindrical surface. What I need to prove is that under acceleration these flukes won't open outwards of their own accord. Mybe I am making this more complicated than I thought since I was just workint on F=Ma and balancing the vertical forces. Am I basically being daft.

 

[desertfox]

Hi Parsnip

How is the weight removed from the spring and does this cylindrical surface rotate at some speed in the vertical axis?


regards desertfox

 

[Parsnip]

Hi desert fox,
The weight is literally pulled from its position onthe spring using a piece of string(!). We are going to use some sort of sprung loaded wedge to keep it in place prior to it being pulled out. There should be no rotation of the cylinder either prior, during or after the weight has been removed.
Regards

 

[desertfox]

Hi Parsnip

If the only thing that forces the flukes out is releasing the spring, what other acceleration is the device subjected
to that could throw out the fluckes??????
Can you give more detail like orientation of the device and which way do the fluckes come up ie against gravity or with it.

regards desertfox

 

[IRstuff]

Is it only acceleration?

Vibration at the resonant frequency of the spring could cause the weight to momentary pop off.

I guess the converse is that given sufficient energy, the same could be said for any sort of pulsed acceleration

TTFN