In the current literature on seaworthiness, it is generally assumed that the pitching and heaving motions of a ship in longitudinal regular waves can be described with sufficient accuracy by a set of two coupled linear differential equations of the second order with constant coefficients.
Using a model, performing forced oscillations in still water, the coefficients of these differential equations are determined experimentally for an 8 ft. model of the Sixty series with a blockcoefficient of .60. The exciting forces and moments are measured on the restrained model in waves.
Four modelspeeds and a wide frequency range are considered.
The solutions of the differential equations, determined in this manner, are compared with the measured motions of the same model in regular waves.
A good agreement is found between the computed and measured modelmotions.
It is shown that some of the so called coupling terms, have an important influence on amplitude and phase of the model motions.
An experimental analysis of shipmotions in longitudinal regular waves1
International Shipbuilding Progress ; 5 , 52 ; 533-542
1958-12-01
10 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Numerical and Analytical Approaches for Roll Motion Analysis in Regular Longitudinal Waves
Online Contents | 2015
|Numerical and Analytical Approaches for Roll Motion Analysis in Regular Longitudinal Waves
DOAJ | 2015
|Moderated vibrations of pitch and jolt in hull on longitudinal train of regular waves
Engineering Index Backfile | 1962
|Dynamic analyses of stiffened triceratops under regular waves: experimental investigations
Online Contents | 2017
|Dynamic analyses of stiffened triceratops under regular waves: experimental investigations
Online Contents | 2016
|