A Study of Notch Fatigue. Part III. Plastic Stress Analysis of Notches.

Abstract

The stress and strain behavior at notch tips is analyzed with the view of using local values for fatigue calculations. A perfectly plastic, closed form solution is used as a starting point and basis of comparison for the finite element analysis. Maximum stress and strain values for 7075-T6 aluminum were obtained via finite elements and reflection photoelasticity in the plastic zone, and residual stress and strain values after unloading were obtained as well. A uniaxial model was used successfully to predict most of the behavior observed. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Sep 01, 1981
Accession Number
ADA111758

Entities

People

  • Gerald H. Lindsey

Organizations

  • Naval Postgraduate School

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Aeronautical Engineering
  • Differential Equations
  • Equations
  • Experimental Data
  • Extrapolation
  • Far Field
  • Fatigue Life
  • Finite Element Analysis
  • Materials
  • Measurement
  • Method Of Characteristics
  • Modulus Of Elasticity
  • Residual Stress
  • Stress Analysis
  • Stress Concentration
  • Stress Strain Relations
  • Stresses

Fields of Study

  • Engineering

Readers

  • Electromagnetic Wave Scattering and Antenna Radiation Engineering
  • Mechanical Engineering/Mechanics of Materials.