Accession Number:

ADA014125

Title:

Data Generation for Finite-Element Structural Analysis of Three-Dimensional Naval Ship Structures.

Descriptive Note:

Research and development rept.,

Corporate Author:

DAVID W TAYLOR NAVAL SHIP RESEARCH AND DEVELOPMENT CENTER BETHESDA MD

Personal Author(s):

Report Date:

1975-06-01

Pagination or Media Count:

84.0

Abstract:

A computer program has been developed to automatically discretize three-dimensional structures consisting of combinations of cross-stiffened grillages. Discretizing is dividing a continuous structure into a number of connected parts so that the sum of the collection of parts equals the total structure. The purpose of this computer program is to shorten the preliminary work time involved in preparing data for analysis by the finite-element method. The grillages can have multiple openings with coamings, and the computer program can also generate the cards that describe inplane and normal uniform loads. Input to the program consists of punched cards which define structural geometry, boundary conditions, and loadings. Output consists of a disk file which can be read directly either by NASTRAN or by a special utility program to produce plots of the discretized structure. Access can also be obtained at a later time by a special purpose program which displays the discretized structure at an interactive graphics terminal. The validated data can then be made accessible to NASTRAN for a finite-element analysis. Modifications to this program will extend the current capability of the program for discretizing from simple warped surfaces to more complex curved surfaces and will allow use of the program on either a UNIVAC-1108 or an IBM-36091 computer. Author

Subject Categories:

  • Numerical Mathematics
  • Computer Programming and Software
  • Computer Hardware
  • Marine Engineering
  • Test Facilities, Equipment and Methods

Distribution Statement:

APPROVED FOR PUBLIC RELEASE