Plastic Yielding at Crack Tips.

Abstract

Small scale plastic yielding at crack tips is studied by means of nonlocal elasticity. Plastic lines along the crack line of Mode III crack are modelled by an array of dislocations. It is shown that plastic yield begins after a definite value of load, as a consequence of nonlocality. The length of plastic zone and the dislocation distribution are determined as functions of the applied load. Results are in good agreement with experimental observations. Keywords: Plastic yielding, Crack tips, Elasticity, Fracture mechanics, Elastic solids, Plasticity.

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Document Details

Document Type
Technical Report
Publication Date
Mar 01, 1988
Accession Number
ADA192549

Entities

People

  • A. C. Eringen
  • S. B. Altan

Tags

Communities of Interest

  • Air Platforms
  • C4I

DTIC Thesaurus Topics

  • Boundary Value Problems
  • Classification
  • Complex Variables
  • Computations
  • Constitutive Equations
  • Continuum Mechanics
  • Crack Tips
  • Differential Equations
  • Elastic Properties
  • Elastic Waves
  • Equations
  • Fracture (Mechanics)
  • Integral Equations
  • Mathematical Analysis
  • Mechanics
  • Security
  • Stresses

Fields of Study

  • Engineering

Readers

  • Materials Science (Mechanical Engineering).