PLASTIC CONCENTRATION FACTORS IN FLAT NOTCHED SPECIMENS OF AISI 4340 STEEL

Abstract

The Neuber rule is evaluated using an appropriate analytic representation of the stress-strain curve of AISI 4340 steel and predictions of maximum notch strain versus nominal net section stress are developed. The theoretical results, when compared with test data from flat notched specimens of the same material with a range of initial elastic concentration factors, show agreement within 5%. It is shown that the limitations of the strain gages in measuring the notch root strains can account for a major part of the discrepancy.

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Document Details

Document Type
Technical Report
Publication Date
Feb 01, 1970
Accession Number
AD0704337

Entities

People

  • Ralph Papirno

Organizations

  • United States Army Research Laboratory

Tags

Communities of Interest

  • C4I
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Accuracy
  • Agreements
  • Applied Mechanics
  • Coefficients
  • Computer Programming
  • Computer Programs
  • Computers
  • Elastic Properties
  • Gages
  • Materials
  • Mechanical Properties
  • Mechanics
  • Modulus Of Elasticity
  • Strain Gages
  • Stress Concentration
  • Stress Strain Relations
  • Thickness

Readers

  • Computational Modeling and Simulation
  • Mechanical Engineering/Mechanics of Materials.
  • Structural Health Monitoring of Composite Structures.