A Displacement Pattern Matching Application in Elastic-Plastic Hybrid Stress Analysis

Abstract

A two-dimensional hybrid experimental-numerical technique for elastic-plastic stress analysis is presented. This technique results from merging two relatively new technologies in engineering mechanics: boundary element methods and image processing. A syntactic pattern recognition scheme termed Displacement Pattern Matching determines displacement boundary conditions to be used in an elastic-plastic boundary element (EPBEM) code. The result is an automated stress analysis tool. Displacement pattern matching is a process where displacements are measured by tracking an arbitrary array of black spots on a white specimen are compared in a double exposure format to determine displacements. Displacement pattern matching is a full-field technique, with spatial resolution on the order .0001 inch.

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Document Details

Document Type
Technical Report
Publication Date
Aug 01, 1988
Accession Number
ADA199028

Entities

People

  • Jim Sirkus

Organizations

  • University of Florida

Tags

Communities of Interest

  • C4I
  • Energy and Power Technologies
  • Space

DTIC Thesaurus Topics

  • Air Force
  • Computational Fluid Dynamics
  • Computational Science
  • Computer Vision
  • Digital Image Processing
  • Digital Images
  • Finite Element Analysis
  • Fungi
  • Image Processing
  • Integral Equations
  • Measurement
  • Mechanics
  • Pattern Recognition
  • Personal Computers
  • Plastic Flow
  • Stress Concentration
  • Stress Strain Relations

Fields of Study

  • Engineering

Readers

  • Combustion Dynamics and Shock Wave Physics.
  • Computer Vision.
  • Fluid Mechanics and Fluid Dynamics.

Technology Areas

  • AI & ML