THE EFFECT OF NONLINEAR STATIC COUPLING ON THE MOTION STABILITY OF A SHIP MOVING IN OBLIQUE WAVES

Abstract

The equations of motion of a ship constrained to oscillate in heave, pitch, and roll, while moving ahead with a uniform velocity in oblique waves are studied. It is shown that because of the nonlinear static coupling which is known to exist between these degrees of freedom, the rolling response can become large when the period of wave encounter is in the neighborhood of one half the natural rolling period. In this case the response has a period which is equal to twice the period of the excitation, and which, as a consequence, is nearly equal to the natural period.

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1963
Accession Number
AD0414572

Entities

People

  • W. D. Kinney

Organizations

  • University of California, Berkeley

Tags

Communities of Interest

  • Ground and Sea Platforms

DTIC Thesaurus Topics

  • Analog Computers
  • Computers
  • Differential Equations
  • Engineering
  • Equations
  • Equations Of Motion
  • Frequency
  • Geometry
  • Government Procurement
  • Governments
  • Model Basins
  • Naval Architecture
  • Ship Model Basins
  • Ship Motion
  • Simulations
  • Steady State
  • Waves

Readers

  • Finite Element Method (FEM) for solving Partial Differential Equations (PDEs)
  • Marine Hydrodynamics
  • Mathematics or Statistics