strokersix
Mechanical
- Dec 7, 2002
- 344
I'm having trouble calculating the oscillation period of a ring on a shaft. If I use the compound pendulum calculation it gives reasonable values if the shaft is very small compared to the ring inner diameter. Increasing the shaft size causes a shorter oscillation period experimentally (observing parts here at my desk) but my simple mathematical model doesn't correlate. I think the missing piece is related to slippage between the shaft and inner diameter of the ring. My math model assumes slippage as the ring moves about it's center of oscillation but the real parts do not slip. It appears that when the shaft and inner diameter of the ring are very close the period approaches that of a simple pendulum. Any help in calculating the period of this pendulum will be much appreciated.
Thank you to all in advance for your time and advice.
Thank you to all in advance for your time and advice.