Analysis of Ship Structural Details by a Top-Down Method Using Results from a MAESTRO Analysis

Abstract

A method for performing a stress analysis of a ship structural detail using the results from a MAESTRO analysis is described. The method used was a top-down procedure where a portion of the MAESTRO model was modelled in considerable detail using a detailed finite element grid with boundary nodes matching the MAESTRO model. The displacements obtained at the boundary nodes from the MAESTRO analysis were applied to the refined model and a finite element analysis was carried out using the fmite element program VAST. The comparison of results shows that a MAESTRO analysis alone cannot determine the stress concentrations that occur in a structural detail such as an opening in a deck. When combined with a top-down procedure however, a more accurate assessment of the detail stresses can be obtained.

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1995
Accession Number
ADA616294

Entities

People

  • Dallin Smith

Organizations

  • Defence Research and Development Canada

Tags

Communities of Interest

  • Air Platforms
  • Ground and Sea Platforms

DTIC Thesaurus Topics

  • Boundaries
  • Bulkheads
  • Canada
  • Classification
  • Contractors
  • Coordinate Systems
  • Displacement
  • Finite Element Analysis
  • Geometry
  • Grids
  • National Security
  • Nova Scotia
  • Security
  • Stress Analysis
  • Stress Concentration
  • Stresses
  • Superstructures

Readers

  • Astronomy/Astrophysics
  • Structural Dynamics.