Accession Number:

ADA616294

Title:

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

Descriptive Note:

Contractor rept.

Corporate Author:

DEFENCE RESEARCH ESTABLISHMENT ATLANTIC DARTMOUTH (NOVA SCOTIA)

Personal Author(s):

• Smith, D. R.

Report Date:

1995-06-01

Pagination or Media Count:

37.0

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.

Descriptors:

• *SHIP STRUCTURAL COMPONENTS
• *STRESS ANALYSIS
• COMPUTER PROGRAMS
• FINITE ELEMENT ANALYSIS
• GRIDS
• MATCHING
• MODELS
• SHIP HULLS
• STRESS CONCENTRATION
• STRUCTURAL PROPERTIES

Subject Categories:

• Marine Engineering

Distribution Statement:

APPROVED FOR PUBLIC RELEASE