Dynamic Fracture Criteria in Structural Solids

Abstract

The numerical part of our program was concerned with the development of very elaborate finite element models designed to investigate dynamic fracture phenomena and to accurately include the effects of three dimensionality, rate sensitivity and material inertia in the analysis of the dynamic failure process. Our most recent interests in this area included the use of continuum damage theories that model the void nucleation and growth process at the vicinity of dynamic cracks. These models were used for the numerical investigation of processes related to crack tip tunneling in ductile metals as well as the formation of shear lips during crack growth. The numerical computations were designed to simulate actual experimental arrangements and their results were always compared by means of the optical and thermographic methods developed in or laboratory.

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Document Details

Document Type
Technical Report
Publication Date
Sep 01, 1991
Accession Number
ADA252905

Entities

Organizations

  • California Institute of Technology

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Applied Mechanics
  • Civil Engineering
  • Crack Propagation
  • Crack Tips
  • Engineering
  • Failure Mode And Effect Analysis
  • Finite Element Analysis
  • Fracture (Mechanics)
  • High Resolution
  • High Speed Photography
  • J Integrals
  • Measurement
  • Mechanical Engineering
  • Mechanical Properties
  • Mechanics
  • Stress Intensity Factors
  • Three Dimensional

Readers

  • Materials Science (Mechanical Engineering).
  • Structural Health Monitoring of Composite Structures.
  • Theoretical Analysis.