VALIDATION OF SHIPMO7 AND PRECAL WITH THE CPF HYDROELASTIC MODEL

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Authors
  1. McTaggart, K.A.
  2. Chow, D.L.
Corporate Authors
Defence Research Establishment Atlantic, Dartmouth NS (CAN)
Abstract
The report gives results of an extensive validation of DND's strip theory program SHIPMO7 and the three-dimensional ship motion code PRECAL developed by Cooperative Research Ships. Ship motion and sea load predictions are compared with results for the CPF hydroelastic model, which was tested in regular and irregular waves in both head and oblique seas. In general, both codes give excellent agreement for ship motions and reasonable agreement for sea loads. In irregular head seas, PRECAL overpredicts vertical bending moment at midships by an average of 9 percent, which is superior to the average overprediction by SHIPMO7 of 25 percent.
Keywords
Strip theory;Panel methods;Sea load;Computer programs (PRECAL);Structural response
Report Number
DREA-TM-97-216 — Technical Memorandum
Date of publication
01 Aug 1997
Number of Pages
61
DSTKIM No
98-00817
CANDIS No
507637
Format(s):
Hardcopy;Document Image stored on Optical Disk

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