Stress Analysis of the Canadian Patrol Frigate Under a Hogging Load Case Using MAESTRO/DSA

Abstract

This report describes a finite element stress analysis of the Canadian Patrol Frigate when it was subjected to a hogging load from an eight meter wave. The analysis was conducted using the program MAESTRO/DSA. Initially the analysis was performed on a global MAESTRO model of the entire ship and a region of high stress was identified. The region was refined using the DSA (Detail Stress Analysis) portion of the program and a top-down analysis was carried out by applying the displacements from the MAESTRO analysis. They were applied to the corresponding nodes of the refined portion of the MAESTRO model and detail stresses were obtained which were found to be higher than those obtained from the global MAESTRO analysis. A second refinement of the high stress region was carried out which covered a larger portion of the structure. The model was created externally using the program HYPERMESH. This larger refined portion was also subjected to a top-down analysis and stresses were obtained. The results of the three analyses are compared.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
May 01, 1998
Accession Number
ADA630497

Entities

People

  • Dallin Smith

Organizations

  • Defence Research and Development Canada

Tags

Communities of Interest

  • Ground and Sea Platforms

DTIC Thesaurus Topics

  • Boundaries
  • Classification
  • Contractors
  • Displacement
  • Distortion
  • Finite Element Analysis
  • Load Distribution
  • National Security
  • Naval Architecture
  • Nova Scotia
  • Security
  • Stress Analysis
  • Stresses
  • Structural Analysis
  • Superstructures
  • Translations
  • Waves

Readers

  • Computational Modeling and Simulation
  • Naval Architecture and Marine Engineering.
  • Structural Health Monitoring of Composite Structures.