Accession Number:

ADA010860

Title:

The Applicability of the Functional Polynomial Input-Output Model to Ship Resistance in Waves.

Descriptive Note:

Final rept. 1 Oct 73-31 Mar 75,

Corporate Author:

STEVENS INST OF TECH HOBOKEN N J DAVIDSON LAB

Personal Author(s):

• Dalzell,J. F.

Report Date:

1975-01-01

Pagination or Media Count:

142.0

Abstract:

The objective of the present work was the same as that of its predecessor that is, to demonstrate by analyses of experimental data that a postulated quadratic functional polynomial model is a reasonable representation of the added ship resistance produced by waves. In the course of the present work some improvements were made in the cross-bi-spectral analysis methods developed previously, three complete cross-bi-spectral analyses of experimental data were made, and it was shown that the mathematical model allows at least the very low frequency non-linear fluctuations of resistance to be synthesized in the time domain.

Descriptors:

• *OCEAN WAVES
• *SHIP HULLS
• MATHEMATICAL MODELS
• TRANSFER FUNCTIONS
• SHIP MOTION
• SPECTRUM ANALYSIS
• FREQUENCY RESPONSE

Subject Categories:

• Marine Engineering

Distribution Statement:

APPROVED FOR PUBLIC RELEASE