Considerations of Crack Growth and Plasticity in Finite Element Analysis.

Abstract

A finite element analysis was made of crack growth in a center-cracked specimen subjected to monotonically increasing load until the point of fast fracture. Since part of the specimen experienced unloading, the boundary value problem which was formulated was based upon incremental theory of plasticity. Experimental load and crack-size records were utilized. Linear relations between plastic energy and crack growth were observed. Fracture toughness parameters Gc, which were evaluated at the onset of unstable crack propagation, obtained from finite element analysis were in good agreement with those determined experimentally.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Jul 01, 1978
Accession Number
ADA305039

Entities

People

  • Harold Liebowitz
  • James D. Lee

Organizations

  • George Washington University

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Boundaries
  • Boundary Value Problems
  • Computer Programs
  • Crack Propagation
  • Crack Tips
  • Cracks
  • Engineering
  • Equations
  • Fast Fractures
  • Finite Element Analysis
  • Fracture (Mechanics)
  • J Integrals
  • Mechanics
  • Plastic Properties
  • Stress Strain Relations
  • Toughness
  • Unloading

Fields of Study

  • Engineering

Readers

  • Materials Science (Mechanical Engineering).