Ship roll mode information extracted from sea trial data.
Wiser, Mickie Kevin
Schmidt, Louis V.
Papoulias, Fotis A.
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Random Decrement (RANDEC) Analysis was applied to time histories of roll motion for the Spruance class destroyer. The data was generated from sea trials conducted on a ship in 1987. The RANDEC process was applied to obtain estimates of roll- resonance modal damping and frequencies due to ship motion excitation by random-natured hydrodynamic forces and moments. Prior to applying the RANDEC technique to ship data, a numerical algorithm was developed and validated using reference data sets with known dynamic traits approaching that expected of the ship.
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