The Development of a Dynamic Elastoplastic Finite Element Analysis for Fast Fracture Under Impact Loading

Abstract

Recent evidence has pointed to the possible inadequacy of elastodynamic treatments of rapid crack propagation and crack arrest. This paper describes the development of a dynamic elastic-plastic finite element capability designed to address this concern by taking direct account of crack tip plasticity. Comparisons with known dynamic fracture mechanics solutions and with experimental data are made to demonstrate the fidelity of the approach. A comparison with an elastodynamic solution in an impact loaded 4340 steel bend specimen is also made. This result reveals that a significant effect of crack tip plasticity may exist even for high strength materials. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1981
Accession Number
ADA109323

Entities

People

  • C. R. Barnes
  • Jalees Ahmad
  • Junoh Jung
  • M. F. Kanninen

Organizations

  • Battelle Memorial Institute

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Crack Propagation
  • Crack Tips
  • Cracks
  • Elastic Materials
  • Fast Fractures
  • Finite Element Analysis
  • Fracture (Mechanics)
  • Geometry
  • Impact Loads
  • Integrals
  • J Integrals
  • Materials
  • Mechanical Phenomena
  • Mechanics
  • Military Research
  • Stress Intensity Factors
  • Transient Response Analysis

Fields of Study

  • Engineering

Readers

  • Materials Science (Mechanical Engineering).
  • Systems Analysis and Design