Computational Mechanics of the Full-Scale and Model-Scale Roll-On, Roll-Off (RORO) Stern Ramp and Experimental Modal Analysis of the Model-Scale Ramp and Support

Abstract

It has been determined that current stern ramp designs lack adequate structural integrity during Sea State Three roll-on, roll-off (RORO) operations. Therefore, passive isolation between the stern ramp and the roll-on, roll-off discharge facility (RRDF) is being investigated as a means of reducing ramp stress levels. A coupled hydro-structural simulation model of the combined ship-ramp-RRDF is under development in order to evaluate candidate isolator technologies. This thesis documents a thorough study of several stern ramp finite element models in order to ascertain the suitability of these models for use in the simulation model. Additionally, an experimental facility is being developed to simulate, at model scale, RORO operations. This thesis also documents the finite element analysis and experimental modal analysis of the primary structural components of the facility, specifically the scale model stern ramp and its support.

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 2001
Accession Number
ADA396578

Entities

People

  • James E. Buckley

Organizations

  • Naval Postgraduate School

Tags

Communities of Interest

  • Ground and Sea Platforms

DTIC Thesaurus Topics

  • Computational Mechanics
  • Computational Science
  • Computer Simulations
  • Dynamic Response
  • Electric Charge
  • Engineering
  • Equations
  • Frequency
  • Materials
  • Mechanical Engineering
  • Mechanics
  • Modal Analysis
  • Molecular Dynamics
  • Resonant Frequency
  • Simulations
  • Test Facilities
  • Vibration

Readers

  • Computational Modeling and Simulation
  • Naval Architecture and Marine Engineering.
  • Structural Dynamics.