Probabilistic Structural Analysis of Ship Hull Longitudinal Strength.

Abstract

Existing probabilistic structural design methods are reviewed, their applicability to ship hull structural design considered and the most promising probabilistic analysis techniques are identified. The current state of knowledge concerning structural modes of failure and load distribution is considered with respect to its impact on probabilistic structural analyses. The emphasis is on longitudinal strength considerations. Factors influencing strength, in terms of uncertainties in ship strength distribution, are reviewed. Different methods are proposed to obtain coefficients of variation for various types of data on the uncertainties. Sample calculations are performed for a number of ships using an approximate probabilistic method and yielding safety margins for each. This method requires that only the coefficients of variation of the strength and load be known. A computer program is developed to perform this calculation for any ship subjected to any load or mode of failure. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1980
Accession Number
ADA099118

Entities

People

  • J. C. Daidola
  • N. S. Basar

Tags

DTIC Thesaurus Topics

  • Computational Science
  • Computer Programs
  • Data Science
  • Databases
  • Distribution Functions
  • Engineers
  • Failure Mode And Effect Analysis
  • Information Science
  • Mechanics
  • Modulus Of Elasticity
  • Monte Carlo Method
  • Naval Architecture
  • Random Variables
  • Surveys
  • Tensile Strength
  • Three Dimensional
  • Two Dimensional

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