Reliability - Based Performance Assessment of Damaged Ships

Abstract

The objective of this project is to develop a procedure and tools for operators and decision makers to assess the residual ultimate hull girder strength of damaged ships for a given damage scenario. In this study, some tools for predicting wave-induced loads and assessing ultimate hull girder strength have been further developed. In particular, 2D linear and non-linear methods have been applied to a ship model to calculate the wave-induced loads in regular waves. The numerical results have been compared with the experimental results. The extreme design loads at sea states 3 - 7 have been calculated using short term prediction. An 'equivalent wave system' has been used to combine vertical bending moment, horizontal bending moment and torsion moment. The ultimate hull girder strength was calculated using MARS (Bureau Veritas software for structural calculation) and ANSYS (FE analysis Software). The reliability of the hull girder was predicted by a First Order Reliability Method (FORM) and Monte Carlo Simulation (MCS).

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Document Details

Document Type
Technical Report
Publication Date
Sep 01, 2008
Accession Number
ADA494771

Entities

People

  • Fei Sun
  • H. S. Chan
  • M. Shahid
  • P. K. Das
  • R. S. Dow
  • Yunjiao Pu

Organizations

  • University of Newcastle

Tags

DTIC Thesaurus Topics

  • Bending Moments
  • Computational Science
  • Coordinate Systems
  • Failure Mode And Effect Analysis
  • Finite Element Analysis
  • Hulls (Marine)
  • Information Science
  • Marine Transportation
  • Mechanics
  • Naval Architecture
  • Reliability
  • Resonant Frequency
  • Ship Design
  • Ship Models
  • Simulations
  • Structural Loads
  • Two Dimensional

Fields of Study

  • Engineering

Readers

  • Computational Modeling and Simulation
  • Marine Hydrodynamics