Initial Studies of Structure Coupling Effects for a Trolley/RRDF Interface

Abstract

The purpose of this thesis is to lay the foundation for analyzing structural coupling effects for a proposed trolley interface between a ship and a roll-on roll-off discharge facility (RRDF). Such a facility could allow heavy cargo transfer at higher sea states. Previous studies have analyzed motions assuring that there is no structural coupling between the trolley and the RRDF. A mathematical model that incorporates structural coupling is developed using the principle of virtual work. In order to assess the degree of necessity for the proposed model we conduct a systematic series of numerical experiments. In these calculations we model the trolley through a generalized stiffness coefficient and assess its influence on RRDF motions. It is shown that modeling of structural coupling may be necessary depending on the relative order of magnitude of trolley structural rigidity and trolley placement.

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Document Details

Document Type
Technical Report
Publication Date
Mar 01, 2003
Accession Number
ADA414992

Entities

People

  • Chong-ann Teh

Organizations

  • Naval Postgraduate School

Tags

Communities of Interest

  • Ground and Sea Platforms

DTIC Thesaurus Topics

  • Birds
  • Couplings
  • Energy
  • Equations
  • Equations Of Motion
  • Frequency
  • Frequency Domain
  • Kinetic Energy
  • Mathematical Models
  • Mechanical Engineering
  • Military Equipment
  • Models
  • Relative Motion
  • Rigidity
  • Stiffness
  • Three Dimensional
  • United States

Readers

  • Aerospace Engineering
  • Computational Modeling and Simulation
  • Naval Architecture and Marine Engineering.