Refinement of Out of Circularity and Thickness Measurements of a Cylinder for Finite Element Analysis

Abstract

The as-built out-of-circularity (OOC) deviations from a perfectly round shape and plate thickness variations of a cylinder that issubjected to external pressure are known to have a significant effect on the collapse strength and must be accurately represented infinite element analysis to obtain accurate results. Often it is necessary to interpolate measurements from a relatively coarse grid to arefined finite element model and methods that have wide general acceptance are Fourier series and bi-linear interpolation. Thesemethods have been implemented in an Excel spreadsheet to produce node and element data that can be used directly in the Strand7finite element package, but the methods employed are suitable for other software as well.

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Document Details

Document Type
Technical Report
Publication Date
Sep 01, 2016
Accession Number
AD1024189

Entities

People

  • B. P. Phelps

Organizations

  • Defence Science and Technology Group

Tags

Communities of Interest

  • Materials and Manufacturing Processes

DTIC Thesaurus Topics

  • Abstracts
  • Accuracy
  • Australia
  • Coefficients
  • Collapse
  • Equations
  • Errors
  • Finite Element Analysis
  • Fourier Analysis
  • Fourier Series
  • Grids
  • Interpolation
  • Measurement
  • Periodic Functions
  • Pressure Hulls
  • Pressure Vessels
  • Spreadsheet Software

Readers

  • Finite Element Method (FEM) for solving Partial Differential Equations (PDEs)
  • Structural Dynamics.