On Size Effects in Plane Stress Crack-Growth Resistance,

Abstract

For a ductile material, the tearing resistance curve represented by the dependence of the fracture parameter J on crack extension delta(a) is a material property only for the small-scale yielding conditions that are approached for very large specimen size. In this paper the influence of size on crack-growth resistance is studied theoretically for single-edge-notch (SEN) specimens of ideally-plastic materials in plane stress. The calculations are based on the Dugdale model in conjunction with a crack-growth criterion defined by and invariant crack-opening shape. Over a large range of specimen sizes, results are exhibited for materials having low-to-moderate values of initial tearing resistance.

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Document Details

Document Type
Technical Report
Publication Date
Apr 01, 1985
Accession Number
ADA155926

Entities

People

  • B. Budiansky
  • E. E. Sumner Jr

Organizations

  • Harvard University

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Crack Propagation
  • Crack Tips
  • Cracks
  • Differential Equations
  • Displacement
  • Equations
  • J Integrals
  • Materials
  • Mechanics
  • Military Research
  • New Jersey
  • Numerical Analysis
  • Resistance
  • Steady State
  • Strain Hardening
  • Universities

Readers

  • Materials Science (Mechanical Engineering).