STRESS ANALYSIS OF THE CANADIAN PATROL FRIGATE UNDER A HOGGING LOAD CASE USING MAESTRO/DSA

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Authors
  1. Smith, D.R.
Corporate Authors
Defence Research Establishment Atlantic, Dartmouth NS (CAN);Smith (D R), Halifax NS (CAN)
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 perfomred 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 form 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.
Keywords
Computer programs (HYPERMESH);Ship structures;Structural detail;Computer programs (MAESTRO);Bottom-up;Mesh refinement;Top-down;DSA (Detail Stress Analysis);MAESTRO/DSA
Report Number
DREA-CR-98-423 — Contractor Report
Date of publication
01 May 1998
Number of Pages
44
DSTKIM No
99-00168
CANDIS No
510002
Format(s):
Hardcopy;Document Image stored on Optical Disk

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