Crack-Tip Fields for Fast Fracture of an Elastic-Plastic Material.

Abstract

An asymptotic analysis of the near-tip fields is given for transient crack propagation in an elastic-plastic material. The material is characterized by J2 flow theory together with a bilinear effective stress-strain curve. Both plane stress and plane strain conditions have been considered. Explicit results are given for the order of the crack-tip singularity, the angular position at which unloading occurs, and the angular variation of the near-tip stresses, all as functions of the crack-tip speed and the ratio of the slopes of the two portions of the bilinear stress-strain relation. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1979
Accession Number
ADA085261

Entities

People

  • C. H. Popelar
  • Jan D. Achenbach
  • M. F. Kanninen

Organizations

  • Northwestern University

Tags

DTIC Thesaurus Topics

  • Civil Engineering
  • Crack Propagation
  • Crack Tips
  • Cracks
  • Engineering
  • Equations
  • Equations Of Motion
  • Fast Fractures
  • Fracture (Mechanics)
  • Mechanics
  • Military Research
  • Physics
  • Security
  • Strain Hardening
  • Stress Strain Relations
  • Stresses
  • Structural Mechanics

Fields of Study

  • Mathematics

Readers

  • Materials Science (Mechanical Engineering).
  • Structural Dynamics.