A Finite Element Study on Crack Tip Deformation.

Abstract

The moire crack tip strain measurements made on double-edge-notched specimens loaded into the region of general yielding are compared with the results calculated by finite element method. It is found that the bulk of the strain measurements agree well with the results of the plane stress calculations except in the small area close to the crack tip. The crack tip region is stiffened against plastic deformation by the triaxial state of stress. The region affected by the crack tip stiffening extends to a distance from the crack tip equal to the specimen thickness.

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Document Details

Document Type
Technical Report
Publication Date
Aug 01, 1976
Accession Number
ADA050815

Entities

People

  • H. W. Liu
  • Wan-liang Hu

Organizations

  • Syracuse University

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Aluminum Alloys
  • Applied Mechanics
  • Chemical Engineering
  • Continuum Mechanics
  • Engineering
  • Far Field
  • Finite Element Analysis
  • Geometry
  • J Integrals
  • Materials Science
  • Mathematical Analysis
  • Measurement
  • Mechanics
  • Plastic Properties
  • Strain Hardening
  • Stress Intensity Factors
  • Stresses

Fields of Study

  • Engineering
  • Physics

Readers

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