Accession Number : ADA324100

Title :   Elastic-Plastic Analysis of a Plate of Strain Hardening Material with a Central Circular Hole - Comparison of Experiment with Finite Element Analysis Containing the Unified Constitutive Material Model.

Descriptive Note : Technical rept.,

Corporate Author : DEFENCE SCIENCE AND TECHNOLOGY ORGANIZATION CANBERRA (AUSTRALIA)

Personal Author(s) : Allan, Robert B.

PDF Url : ADA324100

Report Date : FEB 1997

Pagination or Media Count : 47

Abstract : This report presents an experimental validation of elastic-plastic finite element stress analysis, using a unified constitutive model to describe the plastic response. The validation was done by experimentally measuring the elastic-plastic strain distribution around a circular hole in a flat plate under tensile loading and comparing it with that produced by a finite element analysis of the specimen using the unified constitutive model. The validation involved strain measurements using both strain gauges and full-field photoelasticity. The unified constitutive model was found to provide a significant improvement over classical plasticity modeling for the case of monotonic loading. A similar validation for cyclic plasticity has not yet been undertaken.

Descriptors :   *STRESS ANALYSIS, *FINITE ELEMENT ANALYSIS, *PHOTOELASTICITY, *ELASTOPLASTICITY, PLASTIC DEFORMATION, STRESS STRAIN RELATIONS, LOAD DISTRIBUTION, FATIGUE LIFE, AIRCRAFT MAINTENANCE, TENSILE STRESS, STRAIN HARDENING, STRUCTURAL RESPONSE, HOLES(OPENINGS), STRAIN GAGES, JET FIGHTERS, AUSTRALIA, FLAT PLATE MODELS, STRUCTURAL INTEGRITY.

Subject Categories : Mechanics
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Distribution Statement : APPROVED FOR PUBLIC RELEASE