Accession Number:

ADA199028

Title:

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

Descriptive Note:

Final technical rept. 1 Jun 1987-31 May 1988

Corporate Author:

FLORIDA UNIV GAINESVILLE DEPT OF AEROSPACE ENGINEERING MECHANICS AND ENGINEERING SCIENCE

Personal Author(s):

Report Date:

1988-08-01

Pagination or Media Count:

125.0

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.

Subject Categories:

  • Computer Programming and Software
  • Test Facilities, Equipment and Methods
  • Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE