COMPARISON OF MOTION AND LOAD PREDICTIONS WITH FULL SCALE TRIAL MEASUREMENTS ON CFAV QUEST

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Authors
  1. Stredulinsky, D.C.
  2. Pegg, N.G.
  3. Gilroy, L.E.
Corporate Authors
Defence Research Establishment Atlantic, Dartmouth NS (CAN)
Abstract
The paper describes results of measurements and predictions of ship motions, hull pressure loads and vertical bending moment loads from sea trials undertaken in November 1993 on CFAV QUEST during various operational conditions in moderate seas. Motion and hull pressure spectra derived from the measurements are compared to predictions computed by combining regular wave transfer functions computed with PRECAL, a three-dimensional linear ship motion and load prediction code, with directional wave spectra collected with a directional wave buoy during the trial. Vertical bending moment spectra calculated in a similar manner are compared to bending moment spectra derived from measured strain spectra and full ship finite element analysis. Measured and predicted pressure and bending moment spectra show reasonable agreement, indicating the strong potential of using PRECAL in combination with structural finite element methods to predict structural response spectra for use in spectral fatigue analysis of ship hull structure.
Keywords
Structural response;Spectral fatigue analysis;Computer programs (PRECAL)
Date of publication
01 May 1997
Number of Pages
15
DSTKIM No
97-02250
CANDIS No
502478
Format(s):
Hardcopy;Document Image stored on Optical Disk

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