An Analysis of, and Some Observations on, Dynamic Fracture in an Impact Test Specimen.

Abstract

Numerical simulations of crack-propagation histories in four cases of dynamic tear test experiments on 4340 steel are performed. The influence of the loss of contact of the specimen at various times with either the supports or the tup or both is critically examined. In each case, the variation of the dynamic K-factor, for the simulated crack-propagation history, is directly computed. The results are discussed in the light of current controversies surrounding the dynamic fracture toughness properties governing crack-propagation under impact loading. It is concluded that these controversies may not be fully warranted. (Author)

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Jul 01, 1981
Accession Number
ADA104216

Entities

People

  • M. Perl
  • S. N. Atluri
  • T. Nishioka

Organizations

  • Georgia Tech

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Abstracts
  • Boundaries
  • Civil Engineering
  • Crack Propagation
  • Crack Tips
  • Cracks
  • Demographic Cohorts
  • Diameters
  • Engineering
  • Geometry
  • Impact Tests
  • Intensity
  • Materials
  • Mechanics
  • Simulations
  • Stress Intensity Factors
  • Stresses

Readers

  • Computational Fluid Dynamics (CFD)
  • Materials Science (Mechanical Engineering).
  • Systems Analysis and Design