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.
Descriptors:
Subject Categories:
- Computer Programming and Software
- Test Facilities, Equipment and Methods
- Mechanics