Forces/Moment/Motions Data

1. Time history and FFT (randomness)

2. Stationarity tests

3. Normality tests

4. Statistical convergence error

5. Summary

Summary

• Forces and moment data are random, but narrow banded with sharp peaks at 3, 4, 5, 7, and 10 Hz from mechanical vibrations.

• Motions data are random, but superposed on transient oscillations due to start-up transient.

• Forces and moment and motions data are:
  • stationary for the most of cases,
  • not normally distributed,
  • statistically converged with a statistical convergence error, E_SC < 3%, estimated at a 95% confidence level.